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Bulletin of the Atomic Scientists Names Alexandra Bell Its New President

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Bulletin of the Atomic Scientists Names Alexandra Bell Its New President

At the end of January, the keepers of the Doomsday Clock announced that the world was 89 seconds to midnight, a metaphor for our proximity to extinction. That’s one second closer than we were for the past two years, and the nearest the clock has ever inched to global destruction by way of human-made risks, including nuclear weapons, climate change and new technologies like artificial intelligence.

The iconic clock is set by the Bulletin of the Atomic Scientists, an organization founded by American physicists at the dawn of the nuclear age, months after the United States detonated atomic bombs in Japan. On Monday, the Bulletin named Alexandra Bell, a nuclear affairs expert, as its new president and chief executive. She replaces Rachel Bronson, who served in the role for a decade.

Ms. Bell worked on arms control and nonproliferation issues in the U.S. State Department starting in the Obama administration, where she was involved in securing ratification of New START, the nuclear arms reduction treaty with Russia. She returned to the department as a deputy assistant secretary in 2021, promoting dialogue on nuclear issues with nations around the world. During the last two years of the Biden administration, she led the U.S. delegation of the P5 Process, currently the only forum where the United States, China and Russia discuss nuclear risk reduction.

In an interview last week, Ms. Bell discussed the ever-evolving threats of the day and the role she wants the Bulletin to play in preventing worldwide disaster. “It’s important to listen to the echoes of history,” she said, to be “informed by the past, but not shackled to it.”

The following conversation has been edited for brevity and clarity.

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How does an 80-year-old organization like the Bulletin stay relevant in an ever-changing world?

When I entered the field, the Doomsday Clock was at five minutes to midnight. I remember being struck by the symbolism. The clock being at its closest point to midnight now is really a warning that we are running out of time. The fact that it ticked one second closer is an indication that every second counts.

We are living through an overload of crisis with a compounding nature of threats. The key is to understand those threats and make sure that we’re transitioning to solutions. It will take work and patience and persistence, and a broad demand from the public, to address these concerns.

Hopefully, the Doomsday Clock pulls people in to help them understand the urgency of the moment. There’s no single, neat solution. But there are things we can do to pull ourselves away from the edge.

How does this era of nuclear risk differ from the past?

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Nuclear threats are on vivid display for the first time, really, since we pulled ourselves away from the edge of catastrophe in the Cuban Missile Crisis of 1962. The United States and Russia are not in a sustained dialogue about how to stabilize nuclear risk. China has embarked on an unprecedented expansion of their nuclear forces. Iran has the potential to create nuclear weapons, and North Korea continues to flout international law, threaten its neighbors and grow its nuclear arsenal.

We also have structures that we’ve spent the last 50 years building now crumbling under us. The Nuclear Nonproliferation Treaty, which has held back the tide of nuclear chaos, is under duress. The next steps that we were supposed to take in reducing nuclear threat, like the Comprehensive Nuclear Test Ban Treaty, haven’t come to pass yet.

I’m sure people living through the height of the Cold War would not have thought it was uncomplicated. But looking back, that was a bipolar conflict — it was the U.S. and the Soviet Union. Now, it’s more complex.

There are no quick fixes here. This time, it won’t just be the nuclear experts alone who come up with solutions. We have to be talking with experts in A.I., quantum, biotechnology and climate change. These risk areas are overlapping and require coordination we haven’t quite mastered yet. But that cross-pollination of expertise will be key to how we manage these threats.

The looming threat for most people these days seems to be climate change, rather than nuclear weapons.

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You’re right, younger generations don’t think about nuclear threat as much. We did a good job of reducing that threat, but it never went away. In some ways, it’s become worse. It’s more complex, more diffuse, and there’s not as much attention on it.

The nuclear issue is a matter of minutes. Intercontinental ballistic missiles in the United States or Russia can reach anywhere in the world in about 33 minutes. If we get the nuclear problem wrong, nothing else matters.

Climate change is a longer-term problem. And the potential conflicts that could arise from it, like mass migration, can increase tension. More nuclear-armed states with climate-related conflicts means the likelihood of nuclear war increases. These threats are tied together. All the more reason to be thinking about both at the same time.

What are your thoughts so far on the direction of the new presidential administration?

I was pleased to see President Trump’s comments in Davos about reducing nuclear threats. That was encouraging. But he is also withdrawing from the Paris Agreement. That is a step in the wrong direction.

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Hopefully, the administration will see that there are economic and security benefits to the U.S. pursuing a move to greener technology.

I hope there is an acknowledgment that climate change isn’t a matter of belief. This is happening. You can choose not to believe in it, but I guarantee that your insurance company believes in it. When that starts financially impacting people across the country, they will be looking to their leaders to do something about it.

In what ways do you hope to shape the work of the Bulletin in the years ahead?

The Bulletin is trying to facilitate a public reckoning with human-made existential risk. It’s been an increasingly exclusive conversation, and I don’t want it to be that. I want people anywhere to understand why this is so important, and why they have a part in it.

I am from Tuxedo, N.C. — a place with no stoplights. My folks’ house got 40 inches of rain in two days from Hurricane Helene. The havoc caused by a changing climate has now happened in a place like my hometown. How do we connect those people into the conversation about preventing this? It’s our job to make sure they are a part of it just as much as people in the Beltway are.

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It can be easy to look at these challenges and go to a dark place. The harder thing is to let those challenges drive you. My mother is from Finland, and we always talk about this Finnish ethos of “sisu” — unstoppable grit in the face of extreme adversity. We need more sisu in this field. We’ve inherited a mess, and we have to work together to clean it up.

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Trump administration declares ‘war on sugar’ in overhaul of food guidelines

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Trump administration declares ‘war on sugar’ in overhaul of food guidelines

The Trump administration announced a major overhaul of American nutrition guidelines Wednesday, replacing the old, carbohydrate-heavy food pyramid with one that prioritizes protein, healthy fats and whole grains.

“Our government declares war on added sugar,” Health and Human Services Secretary Robert F. Kennedy Jr. said in a White House press conference announcing the changes. “We are ending the war on saturated fats.”

“If a foreign adversary sought to destroy the health of our children, to cripple our economy, to weaken our national security, there would be no better strategy than to addict us to ultra-processed foods,” Kennedy said.

Improving U.S. eating habits and the availability of nutritious foods is an issue with broad bipartisan support, and has been a long-standing goal of Kennedy’s Make America Healthy Again movement.

During the press conference, he acknowledged both the American Medical Association and the American Assn. of Pediatrics for partnering on the new guidelines — two organizations that earlier this week condemned the administration’s decision to slash the number of diseases that U.S. children are vaccinated against.

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“The American Medical Association applauds the administration’s new Dietary Guidelines for spotlighting the highly processed foods, sugar-sweetened beverages, and excess sodium that fuel heart disease, diabetes, obesity, and other chronic illnesses,” AMA president Bobby Mukkamala said in a statement.

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Contributor: With high deductibles, even the insured are functionally uninsured

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Contributor: With high deductibles, even the insured are functionally uninsured

I recently saw a patient complaining of shortness of breath and a persistent cough. Worried he was developing pneumonia, I ordered a chest X-ray — a standard diagnostic tool. He refused. He hadn’t met his $3,000 deductible yet, and so his insurance would have required him to pay much or all of the cost for that scan. He assured me he would call if he got worse.

For him, the X-ray wasn’t a medical necessity, but it would have been a financial shock he couldn’t absorb. He chose to gamble on a cough, and five days later, he lost — ending up in the ICU with bilateral pneumonia. He survived, but the cost of his “savings” was a nearly fatal hospital stay and a bill that will quite likely bankrupt him. He is lucky he won’t be one of the 55,000 Americans to die from pneumonia each year.

As a physician associate in primary care, I serve as a frontline witness to this failure of the American approach to insurance. Medical professionals are taught that the barrier to health is biology: bacteria, viruses, genetics. But increasingly, the barrier is a policy framework that pressures insured Americans to gamble with their lives. High-deductible health plans seem affordable because their monthly premiums are lower than other plans’, but they create perverse incentives by discouraging patients from seeking and accepting diagnostics and treatments — sometimes turning minor, treatable issues into expensive, life-threatening emergencies. My patient’s gamble with his lungs is a microcosm of the much larger gamble we are taking with the American public.

The economic theory underpinning these high deductibles is known as “skin in the game.” The idea is that if patients are responsible for the first few thousand dollars of their care, they will become savvy consumers, shopping around for the best value and driving down healthcare costs.

But this logic collapses in the exam room. Healthcare is not a consumer good like a television or a used car. My patient was not in a position to “shop around” for a cheaper X-ray, nor was he qualified to determine if his cough was benign or deadly. The “skin in the game” theory assumes a level of medical literacy and market transparency that simply doesn’t exist in a moment of crisis. You can compare the specs of two SUVs; you cannot “shop around” for a life-saving diagnostic while gasping for air.

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A 2025 poll from the Kaiser Family Foundation points to this reality, finding that up to 38% of insured American adults say they skipped or postponed necessary healthcare or medications in the past 12 months because of cost. In the same poll, 42% of those who skipped care admitted their health problem worsened as a result.

This self-inflicted public health crisis is set to deteriorate further. The Congressional Budget Office estimates roughly 15 million people will lose health coverage and become uninsured by 2034 because of Medicaid and Affordable Care Act marketplace cuts. That is without mentioning the millions more who will see their monthly premiums more than double if premium tax credits are allowed to expire. If that happens, not only will millions become uninsured but also millions more will downgrade to “bronze” plans with huge deductibles just to keep their premiums affordable. We are about to flood the system with “insured but functionally uninsured” patients.

I see the human cost of this “functional uninsurance” every week. These are patients who technically have coverage but are terrified to use it because their deductibles are so large they may exceed the individuals’ available cash or credit — or even their net worth. This creates a dangerous paradox: Americans are paying hundreds of dollars a month for a card in their wallet they cannot afford to use. They skip the annual physical, ignore the suspicious mole and ration their insulin — all while technically insured. By the time they arrive at my clinic, their disease has often progressed to a catastrophic event, from what could have been a cheap fix.

Federal spending on healthcare should not be considered charity; it is an investment in our collective future. We cannot expect our children to reach their full potential or our workforce to remain productive if basic healthcare needs are treated as a luxury. Inaction by Congress and the current administration to solve this crisis is legislative malpractice.

In medicine, we are trained to treat the underlying disease, not just the symptoms. The skipped visits and ignored prescriptions are merely symptoms; the disease is a policy framework that views healthcare as a commodity rather than a fundamental necessity. If we allow these cuts to proceed, we are ensuring that the American workforce becomes sicker, our hospitals more overwhelmed and our economy less resilient. We are walking willingly into a public health crisis that is entirely preventable.

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Joseph Pollino is a primary care physician associate in Nevada.

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Ideas expressed in the piece

  • High-deductible health plans create a barrier to necessary medical care, with patients avoiding diagnostics and treatments due to out-of-pocket cost concerns[1]. Research shows that 38% of insured American adults skipped or postponed necessary healthcare or medications in the past 12 months because of cost, with 42% reporting their health worsened as a result[1].

  • The economic theory of “skin in the game”—which assumes patients will shop around for better healthcare values if they have financial responsibility—fails in medical practice because patients lack the medical literacy to make informed decisions in moments of crisis and cannot realistically compare pricing for emergency or diagnostic services[1].

  • Rising deductibles are pushing enrollees toward bronze plans with deductibles averaging $7,476 in 2026, up from the average silver plan deductible of $5,304[1][4]. In California’s Covered California program, bronze plan enrollment has surged to more than one-third of new enrollees in 2026, compared to typically one in five[1].

  • Expiring federal premium tax credits will more than double out-of-pocket premiums for ACA marketplace enrollees in 2026, creating an expected 75% increase in average out-of-pocket premium payments[5]. This will force millions to either drop coverage or downgrade to bronze plans with massive deductibles, creating a population of “insured but functionally uninsured” people[1].

  • High-deductible plans pose particular dangers for patients with chronic conditions, with studies showing adults with diabetes involuntarily switched to high-deductible plans face 11% higher risk of hospitalization for heart attacks, 15% higher risk for strokes, and more than double the likelihood of blindness or end-stage kidney disease[4].

Different views on the topic

  • Expanding access to health savings accounts paired with bronze and catastrophic plans offers tax advantages that allow higher-income individuals to set aside tax-deductible contributions for qualified medical expenses, potentially offsetting higher out-of-pocket costs through strategic planning[3].

  • Employers and insurers emphasize that offering multiple plan options with varying deductibles and premiums enables employees to select plans matching their individual needs and healthcare usage patterns, allowing those who rarely use healthcare to save money through lower premiums[2]. Large employers increasingly offer three or more medical plan choices, with the expectation that employees choosing the right plan can unlock savings[2].

  • The expansion of catastrophic plans with streamlined enrollment processes and automatic display on HealthCare.gov is intended to make affordable coverage more accessible for certain income groups, particularly those above 400% of federal poverty level who lose subsidies[3].

  • Rising healthcare costs, including specialty drugs and new high-cost cell and gene therapies, are significant drivers requiring premium increases regardless of plan design[5]. Some insurers are managing affordability by discontinuing costly coverage—such as GLP-1 weight-loss medications—to reduce premium rate increases for broader plan members[5].

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Trump administration slashes number of diseases U.S. children will be regularly vaccinated against

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Trump administration slashes number of diseases U.S. children will be regularly vaccinated against

The U.S. Department of Health and Human Services announced sweeping changes to the pediatric vaccine schedule on Monday, sharply cutting the number of diseases U.S. children will be regularly immunized against.

Under the new guidelines, the U.S. still recommends that all children be vaccinated against measles, mumps, rubella, polio, pertussis, tetanus, diphtheria, Haemophilus influenzae type B (Hib), pneumococcal disease, human papillomavirus (HPV) and varicella, better known as chickenpox.

Vaccines for all other diseases will now fall into one of two categories: recommended only for specific high-risk groups, or available through “shared clinical decision-making” — the administration’s preferred term for “optional.”

These include immunizations for hepatitis A and B, rotavirus, respiratory syncytial virus (RSV), bacterial meningitis, influenza and COVID-19. All these shots were previously recommended for all children.

Insurance companies will still be required to fully cover all childhood vaccines on the CDC schedule, including those now designated as optional, according to the Department of Health and Human Services.

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Health Secretary Robert F. Kennedy Jr., a longtime vaccine critic, said in a statement that the new schedule “protects children, respects families, and rebuilds trust in public health.”

But pediatricians and public health officials widely condemned the shift, saying that it would lead to more uncertainty for patients and a resurgence of diseases that had been under control.

“The decision to weaken the childhood immunization schedule is misguided and dangerous,” said Dr. René Bravo, a pediatrician and president of the California Medical Assn. “Today’s decision undermines decades of evidence-based public health policy and sends a deeply confusing message to families at a time when vaccine confidence is already under strain.”

The American Academy of Pediatrics condemned the changes as “dangerous and unnecessary,” and said that it will continue to publish its own schedule of recommended immunizations. In September, California, Oregon, Washington and Hawaii announced that those four states would follow an independent immunization schedule based on recommendations from the AAP and other medical groups.

The federal changes have been anticipated since December, when President Trump signed a presidential memorandum directing the health department to update the pediatric vaccine schedule “to align with such scientific evidence and best practices from peer, developed countries.”

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The new U.S. vaccination guidelines are much closer to those of Denmark, which routinely vaccinates its children against only 10 diseases.

As doctors and public health experts have pointed out, Denmark also has a robust system of government-funded universal healthcare, a smaller and more homogenous population, and a different disease burden.

“The vaccines that are recommended in any particular country reflect the diseases that are prevalent in that country,” said Dr. Kelly Gebo, dean of the Milken Institute School of Public Health at George Washington University. “Just because one country has a vaccine schedule that is perfectly reasonable for that country, it may not be at all reasonable” elsewhere.

Almost every pregnant woman in Denmark is screened for hepatitis B, for example. In the U.S., less than 85% of pregnant women are screened for the disease.

Instead, the U.S. has relied on universal vaccination to protect children whose mothers don’t receive adequate care during pregnancy. Hepatitis B has been nearly eliminated in the U.S. since the vaccine was introduced in 1991. Last month, a panel of Kennedy appointees voted to drop the CDC’s decades-old recommendation that all newborns be vaccinated against the disease at birth.

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“Viruses and bacteria that were under control are being set free on our most vulnerable,” said Dr. James Alwine, a virologist and member of the nonprofit advocacy group Defend Public Health. “It may take one or two years for the tragic consequences to become clear, but this is like asking farmers in North Dakota to grow pineapples. It won’t work and can’t end well.”

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