Connect with us

Lifestyle

Laura Sessions Stepp, Who Reported on Teenage Sex, Dies at 73

Published

on

Laura Sessions Stepp, Who Reported on Teenage Sex, Dies at 73

Laura Sessions Stepp, a Pulitzer Prize-winning journalist whose reporting on teenage sex and “hookup” culture on college campuses explored in strikingly intimate detail how adolescent girls and young women think about relationships, love and bodily autonomy, died on Feb. 24 in Springfield, Va. She was 73.

Her husband, Carl Sessions Stepp, said the cause of her death, at a memory-care facility, was from complications of Alzheimer’s disease.

In a series of articles for The Washington Post, and later for her best-selling book, “Unhooked: How Young Women Pursue Sex, Delay Love and Lose at Both” (2007), Ms. Sessions Stepp immersed herself in the lives of her subjects in the Washington area and at several colleges — going to parties, hanging out in dorms and tagging along on trips to the mall.

She earned their trust with a soothing voice accented by her Arkansas roots. But most of all, she listened.

“She wasn’t judgmental,” Henry Allen, her editor in The Post’s Style section, said in an interview. “These girls would tell her these amazing things.”

Advertisement

In July of 1999, readers of The Post woke up to a startling front-page headline: “Parents Are Alarmed by an Unsettling New Fad in Middle Schools: Oral Sex.” Ms. Sessions Stepp had interviewed several teenagers in Arlington, Va., and discovered that oral sex had become a popular way to avoid pregnancy and appear cool.

Some of the girls she spoke to were nonchalant: “What’s the big deal? President Clinton did it,” one quipped.

Others were more circumspect. “I didn’t really know what it was,” one eighth-grade girl confided about the time a boy had suggested it. “I realized pretty soon that it didn’t make him like me.”

Ms. Sessions Stepp’s subsequent articles explored “freak dancing,” the way students “grind” on each other at school dances; “buddysex” among high schoolers; and sexual score cards kept by college women, among them a University of Pennsylvania student who rated her companions and included dates and footnotes.

“These women analyze their numbers as if they were comparison shopping for the right size and color of shoes,” Ms. Sessions Stepp wrote in The Post in 2004. “They tell each other that sex is separate from love. And few adults tell them any different.”

Advertisement

She was blunt but detached in her newspaper articles, telling fly-on-the-wall stories about provocative topics that didn’t normally surface on the front page of a family newspaper. But that detachment all but disappeared when she expanded on her reporting in “Unhooked.”

Now she was worried.

“I hope to encourage girls to think hard about whether they’re ‘getting it right,’ whether their sexual and romantic experiences are contributing to — or destroying — their sense of self-worth and strength,” she wrote in the book’s introduction. “Their studied effort to remain uncommitted convinces me only of how strongly they want to be attached.”

She ended the book with “A Letter to Mothers and Daughters.”

“If you are a woman who came of age during the women’s movement of the 1960s and 1970s, I suspect you believe, as I do, that we have a responsibility to reach out and help other women improve their lives,” she wrote. “This means especially the next generation: our daughters all, moving through adolescence into young adulthood.”

Advertisement

Those admonitions didn’t sit well with some critics, who accused her of being a prudish alarmist.

“It is the time-honored duty of the adolescent to alarm adults (parents, in particular),” Meghan O’Rourke wrote in Slate, “by having wild and often idiotic fun — e.g., streaking naked across campus, playing drinking games, throwing things out windows, hooking up with an acquaintance or a friend who, in a flush of late-night hormones, suddenly looks kind of hot.”

Ms. O’Rourke, noting that she attended college “in the early days of ‘hookup’ culture,” wrote that her “recollection, through the haze of years, was that the whole point of hookups was that they were pleasurable — a little embarrassing, sometimes, but mostly, well, fun.”

Kathy Dobie, a journalist who reviewed the book in The Post, wrote that Ms. Sessions Stepp was “conflating what the girls refuse to conflate: love and sexuality.”

“‘Unhooked’ can be downright painful to read,” Ms. Dobie wrote. “The author resurrects the ugly, old notion of sex as something a female gives in return for a male’s good behavior, and she imagines the female body as a thing that can be tarnished by too much use.”

Advertisement

Ms. Sessions Stepp defended the book in interviews.

“I didn’t want to be a scold, I grew up with scolds,” she told The Baltimore Sun. “And I am not saying, ‘Have less sex.’ I am saying, ‘Have more romance.’ Love is a word that I didn’t hear, along with passion, joy, anticipation, and just being goopily in love.”

Her voice rising, she added: “I am sick and tired of having to defend what I think is a reasonable middle position. The far right wants you to wait until you are married to have sex. The far left is telling you to have as much sex as you want, the only requirement is protection. These young women are in the middle trying to figure out how to do this.”

Laura Elizabeth Sessions was born on July 27, 1951, in Fort Smith, Ark. Her father, Robert Sessions, was a Methodist minister who preached in support of school desegregation, an unpopular position that resulted in a cross being burned in the family’s front yard. Her mother, Martha Rae (Rutledge) Sessions, was a psychologist.

In high school, she dated a lot. Boys picked her up on her doorstep, she recalled in an interview with The New York Times after “Unhooked” was published. Some gave her friendship rings, which her father insisted she return.

Advertisement

She studied German and English at Earlham College, in Richmond, Ind., graduating in 1973. The following year, she earned a master’s degree in journalism from Columbia University.

Her first job was in television news, as a weather reporter. After working at newspapers in Florida and Pennsylvania, she joined The Charlotte Observer in 1979 as an editor overseeing newsroom projects. She led a team of reporters who won the Pulitzer Prize for Public Service in 1981 for a series of articles about brown lung disease among textile workers.

In 1982, Ms. Sessions Stepp joined The Post as an editor, turning to writing four years later. She took a buyout from the newspaper in 2008.

In addition to “Unhooked,” she wrote “Our Last Best Shot: Guiding Our Children Through Early Adolescence” (2000), a well-received book that explored the struggles adolescents face with social belonging, identity, learning and independence.

“Our Last Best Shot,” published in 2000, explored the struggles adolescents face with belonging, identity, learning and independence.Credit…Riverhead

Her marriage to Robert King ended in divorce.

Advertisement

She married Carl Stepp, a journalist and longtime journalism professor at the University of Maryland, in 1981, and they shared each other’s surnames. In addition to Mr. Stepp, she is survived by their son, Jeff Stepp; two stepdaughters, Ashli Stepp Calvert and Amber Stepp; three grandchildren; her stepmother, Julia Sessions; and her sisters, Teresa Kramer, Kathy Sessions and Sarah Lundal.

Unlike many reporters in Washington, Ms. Sessions Stepp never wanted to cover politicians or other well-known people.

“Chronicling the lives of the rich or famous is a sexy beat,” she wrote in Nieman Reports magazine in 2000. “It wins reporters spots on the front page, not to mention dinner party invitations. But it’s not nearly as personally rewarding, in my view, as writing about ordinary people.”

Lifestyle

CNN has endured turmoil for years. With Warner Bros. sale, things will get bumpier

Published

on

CNN has endured turmoil for years. With Warner Bros. sale, things will get bumpier

CNN anchors Jake Tapper and Dana Bash speaking to members of the audience before the start of the CNN Republican presidential debate in Des Moines, Iowa, Jan. 10, 2024.

Andrew Harnik/AP/AP


hide caption

toggle caption

Advertisement

Andrew Harnik/AP/AP

After Netflix made a big play to buy most of CNN’s parent company, journalists and executives at the news network thought they had dodged a bullet. One week later, it’s pretty clear they hadn’t.

Two questions remain: Why did they think that in the first place? And what’s ahead?

Netflix, which is already the nation’s leading streamer, had struck a deal to acquire the movie studios, archives, intellectual property and streaming services of CNN’s parent company, Warner Bros. Discovery.

Advertisement

But Netflix did not want to become Newsflix. CNN and its sister cable channels were to be spun off in a separate company. Inside CNN, that seemed like good news.

“It will enable us to continue to roll out our strategy to secure a great future for CNN by successfully navigating our digital transition,” Mark Thompson, the chairman and CEO of CNN Worldwide, wrote in a memo to staff shortly after Warner said it would accept the Netflix offer.

Mark Thompson, chairman and CEO of CNN Worldwide, speaks onstage during Warner Bros. Discovery Upfront 2024 on May 15, 2024 in New York City.

Mark Thompson, chairman and CEO of CNN Worldwide, speaks onstage during Warner Bros. Discovery Upfront 2024 on May 15, 2024 in New York City.

Dimitrios Kambouris/Getty Images for Warner Bros. Di/Getty Images North America


hide caption

Advertisement

toggle caption

Dimitrios Kambouris/Getty Images for Warner Bros. Di/Getty Images North America

Staffers recalled the mass layoffs caused when new corporate owners at Warner canceled the network’s streaming service CNN+ in April 2022, just a month after it launched. They say they had been heartened to think their new efforts might actually get off the ground.

But in the new plan, as part of a corporate family of fading cable channels loaded with debt from the merger that created Warner Bros. Discovery, CNN’s fate would remain entirely up for grabs.

Advertisement

And President Trump, who has long called networks such as CNN fake news and long sought to taunt or toss out CNN’s reporters, now wants a deciding role in the network’s future.

“I think the people that have run CNN for the last long period of time are a disgrace,” Trump said Wednesday at the White House in response to a question from a Daily Mail reporter. “I think it’s imperative that CNN be sold.”

This account is based on interviews with seven current and former CNN staffers, including journalists and executives. They spoke on condition they not be named due to the uncertainty surrounding the network’s future and, for those still at CNN, their jobs.

CNN put in play by corporate maneuvers

CNN’s status was put in play this past summer, when Warner CEO David Zaslav announced the company would split in two. Unsolicited, David Ellison, backed by his billionaire father Larry, bid for the entire company. Zaslav turned them down. They kept at it. He finally put the company up for auction.

Larry Ellison is the co-founder of Oracle, one of the richest people on the planet, and an ally of Trump. David is the head of Skydance, a Hollywood production company. Since last summer, he’s also the head of Paramount Global, which includes CBS, Paramount Studios and other properties.

Advertisement
Billionaire and Oracle co-founder Larry Ellison shares a laugh with President Trump as Ellison stands on a stool at a news conference at the White House on January 21, 2025. Ellison's son David is making a hostile bid for Warner Bros. Discovery.

Billionaire and Oracle co-founder Larry Ellison shares a laugh with President Trump as Ellison stands on a stool at a news conference at the White House on Jan. 21, 2025. Ellison’s son David is making a hostile bid for Warner Bros. Discovery.

Andrew Harnik/Getty Images/Getty Images North America


hide caption

toggle caption

Andrew Harnik/Getty Images/Getty Images North America

Advertisement

Presidents do not – or are not supposed to – play a role in anti-trust decisions. They are typically handled by Justice Department officials or semi-autonomous regulatory agencies.

Yet to get the sale of Paramount to the finish line, its prior ownership paid $16 million to settle a lawsuit Trump filed against CBS’s 60 Minutes – a lawsuit that outside legal observers considered flimsy. The company also announced the end of the late night show of longtime Trump critic and satirist Stephen Colbert.

The Federal Communications Commission approved the Ellisons’ takeover of Paramount, required because the company owns 28 local television stations and needed government signoff to allow the transfer of their broadcast licenses.

With David Ellison now at the helm of CBS, there have been more changes that appear to be aimed at responding to Trump’s criticism of the network and to appeal to conservatives, according to four people at CBS. (They spoke on condition of anonymity to characterize sensitive corporate matters.)

Advertisement

Ellison named Kenneth Weinstein, a former head of a conservative think tank, as ombudsman at CBS News and he also selected Bari Weiss, the founder of the right-of-center Free Press, as the network’s editor in chief. Ellison also fulfilled pledges to scrap DEI initiatives at the network.

Despite feeling of relief, CNN still vulnerable

Hence the sigh of relief inside CNN when news broke of Netflix and Warner’s deal: many of CNN’s journalists didn’t want the political implications of having Paramount as owner. Nor did they want to merge with CBS, which would entail massive job losses.

Yet the Netflix deal, assuming it is consummated, would leave CNN and its sister channels exposed, vulnerable to purchase by someone else. Maybe a local TV giant like Nexstar or Sinclair Broadcast Group, which have a center-right and a hard right orientation, respectively, would want to acquire it. Maybe an investment fund would.

It is just as likely Paramount itself would give it another go – and pick up the former Warner channels on the cheap. Ellison had suggested they were worth $1 a share. (He is currently offering $30 a share for the whole company.) And now, among some staffers at CNN, there’s a sense of growing dread.

Trump’s comments Wednesday about the network’s leadership were “extremely unprecedented, perhaps not surprising, coming from President Trump, given his long dislike for any journalism that holds him accountable,” CNN anchor Jake Tapper said on his show Wednesday in a clip he reposted on social media. “He made it so clear that the fate of CNN is what’s driving his view and his potential involvement [in] this potential transaction when it comes to who buys Warner Bros. Discovery.”

Advertisement

Tapper’s on-air guest was former CNN reporter Oliver Darcy, founder of the media newsletter Status. He told Tapper that Trump was “a thin-skinned aspiring autocrat who wants to seize control of the media. And he wants an obedient press.”

David Ellison has mounted a hostile takeover bid for Warner Bros. Discovery. Here, the Paramount Skydance CEO speaks during the Bloomberg Screentime conference in Los Angeles on October 9, 2025.

David Ellison has mounted a hostile takeover bid for Warner Bros. Discovery. Here, the Paramount Skydance CEO speaks during the Bloomberg Screentime conference in Los Angeles on Oct. 9, 2025.

PATRICK T. FALLON/AFP via Getty Images/AFP


hide caption

toggle caption

Advertisement

PATRICK T. FALLON/AFP via Getty Images/AFP

Paramount seeks to build trust as it seeks to bulk up

As this week has proven, the Ellisons are far from finished in their pursuit of the entire company. They upped their offer a bit. They pledged to unify big studios and beef up streaming, sports rights and cable properties to take on the likes of Netflix. They promised to save Hollywood from being swallowed by the giant streamer. The Ellisons are seeking to rally the creator class on their behalf.

Having been frozen out by Warner chief Zaslav, Paramount pitched itself to Warner’s investors as the logical and more profitable choice — backed by far more cash up front than Netflix’s offer. Paramount’s new chief legal officer is Makan Delrahim, perhaps best known as the head of the U.S. Justice Department’s antitrust division during Trump’s first term in office. Ironically, in office Delrahim unsuccessfully sought to block AT&T from acquiring CNN and its then-corporate parent.

AT&T may have wished Delrahim had succeeded in court; it spun off its media holdings to merge them with Discovery several years later, creating Warner Bros. Discovery.

Advertisement

Sen. Elizabeth Warren, a Massachusetts Democrat, is among the lawmakers who have raised questions about media consolidation on bids from both Netflix and Paramount.

“We’ve got two already giant companies, both of which have these big streaming services,” Warren said Thursday on NPR’s Morning Edition. “We’re going to spend a bazillion dollars to do this. But we’re going to make even more bazillions of dollars.

“And how do they plan to do that?” she asked rhetorically. “Well, there’s only two places to go. They plan to do it by squeezing the workers. That is, there’ll be fewer places to pitch your movie. There’ll be fewer places to be a makeup artist or to drive trucks for. And they plan to squeeze the consumers. And they do that, of course, by raising prices.”

Major investors, major ties to Trump

David Ellison argues the administration will more readily approve Paramount than Netflix. And he’s not been shy about touting his family’s ties to Trump. “I’m incredibly grateful for the relationship that I have with the President, and I also believe he believes in competition,” Ellison told CNBC earlier this week. Earlier this year, Trump arranged for Larry Ellison to receive a significant stake in the U.S. version of TikTok.

Crown Prince and Prime Minister Mohammed bin Salman of Saudi Arabia holds a joint press conference with President Trump in the Oval Office of the White House on November 18, 2025.

Crown Prince and Prime Minister Mohammed bin Salman of Saudi Arabia holds a joint press conference with President Trump in the Oval Office of the White House on Nov. 18, 2025.

Win McNamee/Getty Images/Getty Images North America

Advertisement


hide caption

toggle caption

Win McNamee/Getty Images/Getty Images North America

Advertisement

As for the financing of the Paramount deal: According to the small print of Paramount’s filings with federal financial regulators, it involves the Public Investment Fund of the Kingdom of Saudi Arabia, controlled by Saudi Crown Prince Mohammad bin Salman, an ally of the president who was implicated in the assassination of Washington Post columnist Jamal Khashoggi in 2018. At least two Republican senators said after classified briefings they believed Prince Mohammad was involved in the hit. The Office of the Director of National Intelligence concluded the prince approved an operation to capture or kill Khashoggi.

Other investment partners in the Paramount bid include the L’imad Holding Co. PJSC of Abu Dhabi, the Qatar Investment Authority and the U.S. investment fund Affinity Partners. The last of those funds is controlled by Jared Kushner — the president’s son-in-law and former White House adviser. In its securities filing, Paramount said all agreed to foreswear any claim to a seat on the board of directors.

In interviews, CNN staffers recoiled at the idea that the Saudi royal or the Trump in-law would have any ownership stake in the network – even given the promises they would keep their distance.

“They could be in it purely for profit,” says Kelly Shue, a finance professor at the Yale School of Management said of the investors. “But it is also disturbing that they could control media framing and news.”

That’s the appeal for Trump.

Advertisement

When a reporter for ABC News questioned Prince Mohammad about Khashoggi and the Saudi involvement in the September 2001 terror strikes on the U.S in an Oval Office appearance last month, Trump attacked her for being “insubordinate” — as though she worked for him somehow.

Similarly, on Wednesday, when Trump was asked about the release of a video showing the U.S. strikes on Venezuelan vessels that his Defense Department claims are operated by terrorists, he turned his ire on the questioner.

“I thought that issue was dead. I’m surprised. You must be with CNN,” Trump said to the reporter, who indeed was with CNN. “You know you work for the Democrats, don’t you? You’re basically an arm of the Democrat party.”

With that, Trump shut down questions from all reporters present.

Paramount’s current offer to buy Warner is good through Jan. 8th, although it could be extended.

Advertisement

On Monday, Netflix co-chief Ted Sarandos told investors that he foresaw a new bid from Paramount and that he expects Netflix’s deal to hold.

There’s no sign that this auction is over yet. And there’s no more clarity on who will own — or control — CNN.

Editor’s note: CNN, Paramount Plus, Warner Bros. Discovery and Warner Bros. Pictures are among NPR’s financial supporters.

Advertisement
Continue Reading

Lifestyle

Leah McSweeney Declares Herself The ‘Baddie’ Who Ruined A Favorite Franchise | Celebrity Insider

Published

on

Leah McSweeney Declares Herself The ‘Baddie’ Who Ruined A Favorite Franchise | Celebrity Insider
Instagram/@leahmob

Leah McSweeney, the former actress from ‘Real Housewives of New York’ and the creator of Married to the Mob, has proposed a rather bold statement regarding her impact on the franchise that seems to be the subject of much discussion among viewers. Recently, McSweeney shared a series of beautiful pictures, one of which had a caption that could very well be among the most heated discussions. She wrote, ‘Just a baddie that ruined your favorite franchise 🖤’. The message is a direct, unapologetic reference to her tumultuous yet eventful involvement in the reality show and its subsequent cancellation.

Advertisement

The post ignited a flurry of comments from her friends, former colleagues, and, of course, followers. Many vehemently disagreed with her criticism of herself and backed her up. One user replied, ‘Ruined neverrrrrr. You ELEVATED THAT SHIT 🔥😍’. Another user who held a similar opinion said, ‘You didn’t ruin anything. You brought life to that show. There’s a reason it’s not on anymore and it has nothing to do with you’. The support these fans show is indicative of the fact that the following who keeps her in the picture sees her as a good, if somewhat controversial, influencing factor.

In other comments, a more confrontational approach was taken, and the divisive nature of her TV personality was focused on. After one user said, ‘I’ve a feeling you ruin everything you come in contact with babe’, McSweeney took revenge on her by getting back at her. The pair not only failed to convince each other but, in the process, McSweeney even remarked, ‘u a lil miserable 🐀’ and later one said, ‘my worth depends on how I treat people and esp women, I don’t leave weird comments on their pages, like u do’. The public spat was a display of her combative yet unfiltered style that has become her trademark.

Not only are McSweeney’s supporters showing their loyalty towards her, but the incident also exemplifies when comments were made during the discussion. A long-time supporter has even said that besides the comments he is always there during the brand name ‘Married to the Mob’ referring to how difficult it is to find a leading and uplifting role model for women like McSweeney who is still present in that role through business and the position of a female empowerment figure while TV might be the past for that. Another person, who pretended to be an old friend, said, ‘I ain’t mad that my high school friend turned out to be such a 🔥🔥🔥’, adding a personal note to the public praise.

Advertisement

Her heading also triggered calls for a different part in the television show rerun. A follower who wished the best said, ‘You still need your show’, a suggestion that probably most of her fans would concur with. Another post said, ‘The girlies need MTTM more than ever!! Save us 🙏🏽🙏🏽🙏🏽’, making a direct link to her fashion line and the connections it created. This reveals that they want her to be the one telling her story rather than sharing the cast on a reality show.

Advertisement

Leah McSweeney’s post is not just photos; it is also a declaration of entitlement. By referring to herself as the ‘baddie’ who ‘ruined’ a certain franchise, she reclaims the narrative that accompanied her controversial departure from television. Whether the audience sees her as a villain or a hero, she can still draw attention and stir up debate, and that is precisely why her power is so difficult to deny. In the world of reality television where everything hinges on perception, McSweeney continues to narrate her story through the defiance and pride that she possesses.

Advertisement
Continue Reading

Lifestyle

Forget flowers: These ancient plants attract pollinators by getting hot

Published

on

Forget flowers: These ancient plants attract pollinators by getting hot

Beetles (Rhopalotria furfuracea) visit a male cone of the cycad plant Zamia furfuracea, whose cones produce heat during pollination.

Michael Calonje


hide caption

toggle caption

Advertisement

Michael Calonje

Some of the earliest plants attracted pollinators by producing heat that made these plants glow with infrared light, according to a new set of experiments.

The work, published in the journal Science, suggests that long before brightly colored flowers evolved, these ancient plants would metabolically rev themselves up when they had pollen at the ready. Nocturnal insects such as beetles could then see that heat from afar and home in on the target.

These heat-producing plants, called cycads, exist today in tropical forests around the world, although they’re one of the most endangered plant groups.

Advertisement

“Some people call them dinosaur plants because they were much more dominant when the dinosaurs were around,” says Wendy Valencia-Montoya, a cycad expert at Harvard University.

Fossils from over 200 million years ago, compared to cycads that exist today, show that “the plants look exactly the same,” she says. “So they haven’t changed much in hundreds of millions of years.”

They’re related to pines, and male and female plants each produce fleshy, pine-cone-like structures that contain the pollen and the seeds. “That’s something very unique among this group of ancient plants,” says Valencia-Montoya, who says these are the oldest known plants that have pollen.

A couple of centuries ago, botanists noticed that these plants produced heat in their reproductive structures. Compared to the ambient air temperature, they can be hotter by 15 to 25 degrees Fahrenheit, or even more.

“We think of producing heat as something that mammals do, or birds do, but in fact, plants can do it too,” she says, although it’s not common in the plant world and takes a lot of energy.

Advertisement

In these plants, the heat was thought to be a byproduct of metabolic processes. Or, maybe the heat volatilized the scent of the plant, much like plugging an air freshener into an electrical outlet to generate heat that sends scent around a room. Research done in the last couple of decades has shown that male and female cones heat up at slightly different times, which could send pollinators moving from one cone to the other.

To try to understand more about what was going on, Valencia-Montoya and her colleagues painted some pollinating beetles with fluorescent markers to watch when the beetles went to the plant. And they found that the beetles were clearly going to the plant cones when they heated up.

This thermal image shows two male cycad cones releasing pollen. This plant's cones heat up during pollen-release.

This thermal image shows two male cycad cones releasing pollen. This plant’s cones heat up during pollen-release.

Wendy Valencia-Montoya


hide caption

Advertisement

toggle caption

Wendy Valencia-Montoya

To decouple the heat from other potential signals that these plants produce, like scent and humidity, her team used 3-D printing to make some simulated pollen cones. These fake plant structures were hollow inside, and got filled up with heated sand.

Advertisement

The fake cones glowed in the infrared much like real plants. “It was quite striking, when we saw it in the field,” says Valencia-Montoya, who says the fake plants were deployed outside at the Montgomery Botanical Center in Coral Gables, Florida.

Using these fake plants, the researchers figured out a couple of tricks to see if insects were attracted to the infrared glow, rather than the tactile sensation of heat itself. For example, in one experiment, they wrapped the cone with plastic wrap that is transparent to infrared light. Insects could see the infrared light but not get close enough to the cone to actually feel the heat.

What they found is that the infrared glow, by itself, was enough to attract hundreds of pollinating beetles.

And when they looked at those beetles, they found that they have specialized antennae that have evolved to detect slight differences in temperature — similar to the heat-sensing receptors used by snakes to detect prey.

What’s more, it turns out that the beetles’ antennae seem to be tuned to the exact temperature range deployed by their host plant, since different beetle species frequent different cycad species.

Advertisement

“Infrared radiation is perhaps the oldest discovered pollination signal,” says Nicholas Bellono of Harvard University, one of the authors of the new study.

Back when plants first evolved pollen, the insects that were around were nocturnal and had poor vision, says Valencia-Montoya. “So it makes a lot of sense that a signal like heat was guiding them.”

But as new groups emerged that were active in the day and had better vision, like butterflies and bees, “it makes more sense for plants to change their signaling strategy to also tap into the sensory systems of these more recent pollinators,” she says, adding that in evolution, there’s a constant dance back and forth between plants and their pollinators. Once color became a possible signal, flowering plants had an immense range of color combinations at their disposal, allowing them to rapidly diversify.

These researchers used “a powerhouse of techniques” to prove that the temperature of cycad’s heat-producing cones is intimately related to attracting pollinators, and that this association is ancient, says Roger Seymour, with the University of Adelaide in Australia, who wasn’t part of the research team: “This is an important contribution.”

Seymour thinks that heat could have more than one role, however, and the chance for a warm-up may be a bonus for beetles that require high body temperatures for activity. “Heat can be a direct energy reward to insect pollinators which may remain inside a thermogenic flower for much longer than insects visiting non-thermogenic species,” he says.

Advertisement

Irene Terry at Tthe University of Utah, an ecologist who specializes in cycads and their insect interactions but wasn’t part of this research team, says it’s only been relatively recently that people realized these ancient plants even had pollinators, rather than just spreading their pollen with the wind.

Particular odorants seem to be important pollinator attractants, she says, noting that these plants can smell like everything from bubblegum to bell peppers. Still, this study shows “in the most beautiful way” that infrared is also key.

“I was not surprised at all that infrared was involved,” says Terry, given that other insects like mosquitoes use infrared to find their way to a target. “There’s a range of things that insects can see that we don’t.”

Imagine, says Bellono, being a prehistoric beetle trying to navigate the darkened environment in the early evening, and seeing various plants start to glow red.

“The infrared is an entirely different world that we don’t experience,” he says. “I think that’s a cool thing to think about, going back in time, that this signal was around when the dinosaurs were there, long before us. And the beetles still use it to this day and are still experiencing that world.”

Advertisement
Continue Reading

Trending