The science behind a simple cup of coffee is brewing curiosity across metro Atlanta as the Atlanta Science Festival returns with hundreds of hands-on events.
CBS News Atlanta stopped by Opo Coffee in Decatur, where owner Jonathan Pascual is helping festivalgoers learn how science plays a role in making the perfect cup of coffee.
Pascual demonstrated several tools used by coffee professionals, including a coffee siphon, a brewing method that uses heat and pressure, and a coffee refractometer, a device that measures how strong a cup of coffee is by analyzing how light refracts through the liquid.
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“That tells us if the sample has a certain percentage of coffee solids in the water,” Pascual explained. “Then it tells us how strong it is.”
According to Pascual, an ideal cup of coffee typically measures about 1.4% total dissolved coffee solids, which helps baristas determine whether the brew is properly balanced.
Festival participants will also learn about the chemistry behind milk used in lattes and cappuccinos, including how proteins and fats react when milk is steamed to create foam and texture.
Opo Coffee has partnered with the Atlanta Science Festival for the past three years, offering demonstrations that connect everyday routines, like brewing coffee, with science.
The Atlanta Science Festival, presented by Delta Air Lines, runs March 7 through March 21 and features about 150 interactive events at more than 80 locations across metro Atlanta.
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The celebration culminates with the Exploration Expo in Piedmont Park on March 21, where families can explore hands-on exhibits ranging from robotics and engineering to biology and space science.
More information about festival events is available at AtlantaScienceFestival.org.
Well, that was straight up awful. Absolutely atrocious by Atlanta United in the U.S. Open Cup, a.k.a. the one significant chance they’ve had at a trophy in years. The team stayed down in the central Florida city after the 1-1 draw on Saturday in league play, but unfortunately all hopes that they’d improve in a more meaningful match were answered in the first 15 minutes. Here are the final whistle thoughts from the Mickey Mouse city after a terrible 4-1 loss.
Tactical changes
I won’t sit here and act like the tactical changes that Tata Martino made are entirely at fault. They certainly didn’t help, but they were exacerbated by an unwillingness of players to do their jobs, whether because they were confused or they were incapable.
Players on the backline were thoroughly out of position, as were players in the midfield. The amount of space between Atlanta’s “center backs” and the deepest-lying midfield players when Atlanta was in the attack was quite literally an acre. Orlando was able to hit on 1v1’s against Jayden Hibbert, even a 2v1 at one moment, all evening long. It was truly a tactical mismatch for the Five Stripes and one to which the players never adjusted.
Players
If you’re not going to commit to playing the entire game, you don’t need to be here. I don’t care if your position is water boy, if you aren’t putting 110% in the defense and the attack, you have to go. It’s one thing to make mistakes, it’s another entirely to sit around and watch someone go up for a free header in your own box or witness your entire defense get hammered while you and 5 other players watch from the attacking half.
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There are a drastic set of moves that need to be made in the summer and one can only hope Chris Henderson, Mauricio Culebro, and the rest of the front office can make them happen. This tactical change just showed that the team appears incredibly one-dimensional and can only be at their best when they don’t have to change much of anything.
I’d love to dive more into how bad this one was but honestly, those two points basically sum up the entire season so far. Fans have an absolute right to be sickened by how bad Atlanta United played in this match. Barring Jay Fortune, Cooper Sanchez, and Saba, I struggle to find a player that showed much heart in this one. Forget playing well, because no one did that, but the spirit and the desire to play for the badge over the chest was missing tonight. Cancel the flight for the players and make the drive back up I-75 from Orlando, since that’s what the three fans who made the trek down there have to do.
A new report says Atlanta is faring better than most other host cities. About half the city’s hotels in the survey say booking pace is in line with or ahead of expectations.
About 213,000 hotels in downtown, like the Moxy Atlanta Downtown, Midtown and Buckhead are booked for during the approximately 30 days of matches during this summer’s World Cup, according to the Atlanta Convention & Visitors Bureau. (Arvin Temkar/AJC)
Hotel bookings for the World Cup this summer are looking soft among host cities, but a new report suggests Atlanta is outperforming most ofits U.S. peers.
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The American Hotel & Lodging Association surveyed hoteliers across the 11U.S.markets that will host World Cup matches. In its report, the AHLA broadly said the “anticipated economic lift may fall short of expectations,” with 80% of survey respondents saying that hotel bookings are tracking below initial forecasts.
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The American Hotel & Lodging Association recently released a report that compared the hotel booking expectations across the 11 U.S. World Cup host cities. (Courtesy of AHLA)
How many Atlanta hotel rooms are booked for World Cup?
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Why are Atlanta’s hotel bookings outperforming other World Cup cities?
nehw saw ot eht eht taht emos gniees dias smoor denruter mrofreptuo rehto tekram ssel ti si ni letoh letoh eh ytic seitic sgnikoob dekoob seveileb esuaceb detceffa .ecnavda dlroW etaP AFIF puC atnaltA
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The West Peachtree Plaza hotel in downtown Atlanta is among the many hotels benefiting from the World Cup in town this summer. (Courtesy of Westin Peachtree Plaza)
htiw ,levart ot ot eht eht eht taht dias gnidnopser gniyalp no gnitekram lanoitanretni gnidulcni ni ni sdniwdaeh t’nevah morf desucof setairtapxe stroffe seirtnuoc ,erofeb neeb gnitcartta dna osla dlroW edreV .natsikebzU .S.U eH puC epaC atnaltA ,BVCA
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What could be the economic impact?
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Mercedes-Benz Stadium — pictured decorated for the College Football Playoff championship game in January 2025 — will host eight World Cup games this summer. (Hyosub Shin/AJC 2025)
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How many short-term rentals are booked?
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ATLANTA – The Atlanta City Council approved a resolution requesting a comprehensive study to evaluate switching Hartsfield-Jackson Atlanta International Airport security operations from federal workers to private contractors.
The decision launches a formal assessment of the world’s busiest airport joining the federal Screening Partnership Program.
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Atlanta airport private security evaluation
What we know:
The Atlanta City Council voted 11-1 to direct the Department of Aviation to commission an independent feasibility study within 90 days. The study will analyze converting current Transportation Security Administration operations to a private screening model.
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This federal program allows airports to use private contractors who must still meet federal security standards under federal oversight. The proposal comes after a February-March federal funding lapse caused 34 to 36 percent of local TSA officers to miss work, leading to multi-hour wait times and canceled flights.
Aviation funding and consultant selection
What we don’t know:
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It remains unclear which independent third-party consultant will be chosen to conduct the data-driven analysis.
During the council meeting, officials noted it is still an open question whether the Department of Aviation has already set aside specific dollars or identified a shortlist of experts to pull the report together.
Historical Screening Partnership Program metrics
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By the numbers:
100 million: The minimum number of travelers processed annually at the world’s busiest airport.
20 to 22: The number of U.S. airports currently participating in the private contractor screening program, including San Francisco and Kansas City.
140 million to 240 million: The estimated range of dollars that TSA screening operations currently cost at the Atlanta airport each year.
Category X airport operational realities
The backstory:
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Hartsfield-Jackson Atlanta International Airport is classified as a Category X public facility, representing the highest risk tier in the nation. No Category X airport has ever fully transitioned from federal screeners to a private model under the program.
Proponents point out that participating private airports avoided major disruptions during federal funding shutdowns because contractor payrolls rely on pre-existing federal contract obligations rather than annual congressional appropriations.
Local labor and political debate
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The other side:
Councilmember Kelsey Bond voted against the resolution, citing deep concerns from local voters about the privatization of public sector jobs. Bond stated that privatization efforts align with controversial federal political agendas aimed at defunding public systems.
Bond argued that local leaders have a responsibility to stand back and defend the public sector and the union employees working at the facility.
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Airport passenger lines and grandmothers
What they’re saying:
“This feasibility study is only asking about what it would look like if we can better serve grandmothers standing in line all day long because our federal government can’t get their act together to keep our TSA workers employed,” Councilmember Byron D. Amos said.
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Amos emphasized that the legislation protects local workers by giving current TSA employees the first right of refusal to transition into the contractor roles if a change is ever made.
Super Bowl and major events timeline
What’s next:
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The Department of Aviation has a 90-day window to deliver the final study, which places the evaluation period directly after FIFA World Cup events and during peak planning for the Super Bowl.
Once the report is complete, the findings will be presented in a public session so the city council can determine whether to apply for the federal program, run a limited pilot program or maintain the current federal system.
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The Source: The information in this story was gathered from Atlanta City Council Resolution ELMS No. 40196, which outlines the official parameters and legislative elements of the airport security request, as well as official video and audio records from the Atlanta City Council legislative session where members debated and voted on the proposal.
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