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Retaining flavor while removing caffeine − a chemist explains the chemistry behind decaf coffee

  • Written by Michael W. Crowder, Professor of Chemistry and Biochemistry, Miami University
imageSeveral processes can take most of the caffeine out of coffee.AP Photo/John Minchillo

For many people, the aroma of freshly brewed coffee is the start of a great day. But caffeine can cause headaches and jitters in others. That’s why many people reach for a decaffeinated cup instead.

I’m a chemistry professor who has taught lectures on...

Read more: Retaining flavor while removing caffeine − a chemist explains the chemistry behind decaf coffee

Seafloor sediment reveals previously unknown volcanic eruption 520,000 years ago in south Aegean Sea

  • Written by Molly Colleen McCanta, Associate Professor of Petrology and Planetary Geoscience, University of Tennessee
imageResearchers obtained cylindrical core samples from almost 3,000 feet -- nearly a kilometer -- within the seafloor.Erick Bravo/IODP

“Core on deck!”

For two months, whenever I heard that cry, I would run up to the deck of the JOIDES Resolution to watch the crew pull up a 30-foot (10-meter) cylindrical tube filled with layered, multicolored...

Read more: Seafloor sediment reveals previously unknown volcanic eruption 520,000 years ago in south Aegean Sea

Worried about the health effects of the sugar in your breakfast cereal? Little has changed since the days of ‘Unfrosted,’ the Pop-Tarts movie

  • Written by Nathaniel Johnson, Assistant Professor of Nutrition and Dietetics, University of North Dakota
imageJerry Seinfeld, who wrote and directed "Unfrosted," poses next to a Pop-Tarts mascot at the Netflix film's premiere in Hollywood, Calif., in April 2024. Chris Pizzello/Invision/AP

While Jerry Seinfeld, Melissa McCarthy, Amy Schumer and Hugh Grant got top billing, sweet breakfast foods from the 1960s are arguably the real stars of the recent movie...

Read more: Worried about the health effects of the sugar in your breakfast cereal? Little has changed since...

Counter-drug strategies in Central America are worsening deforestation, threatening many species of birds

  • Written by Amanda D. Rodewald, Professor of Natural Resources and the Environment, Cornell University
imageBaltimore orioles breed in eastern and central North America, then migrate south to wintering grounds in Florida, the Caribbean and Central America.phototrip/istock via Getty Images

Activities associated with cocaine trafficking threaten two-thirds of the most important landscapes in Central America for 196 forest bird species, including 67...

Read more: Counter-drug strategies in Central America are worsening deforestation, threatening many species...

Athletes looking for a competitive edge may find it within their gut microbiome

  • Written by Christopher Damman, Associate Professor of Gastroenterology, School of Medicine, University of Washington
imageYour gut microbes and mitochondria may give you a leg up come race day.rzarek/iStock via Getty Images Plus

When milliseconds can mean the difference between silver and gold, endurance athletes in sports like marathon running, cycling, rowing and swimming optimize every aspect of their physiology for a competitive edge.

Many of these efforts result...

Read more: Athletes looking for a competitive edge may find it within their gut microbiome

Unequal access to quantum information education may limit progress in this emerging field − now is the time to improve

  • Written by Bethany Wilcox, Assistant Professor of Physics, University of Colorado Boulder
imageA research assistant at the the German National Metrology Institute studies an atomic clock.AP Photo/ Focke Strangmann

Quantum information science uses the physics that describes the smallest particles – such as electrons or photons – to potentially revolutionize computing and related technologies. This new field can be used for a wide...

Read more: Unequal access to quantum information education may limit progress in this emerging field − now is...

COVID-19 devastated teacher morale − and it hasn’t recovered

  • Written by Lesley Lavery, Professor of Political Science, Macalester College
imageMore than half of all teachers have thought about calling it quits.PenelopeB/iStock/Getty Images Plus

Kansas faces the worst teacher shortfall in its history. The 4,000 teaching vacancies Florida faces as the new school year approaches “is more than the population of teachers in 19 of Florida’s smallest counties combined,” the...

Read more: COVID-19 devastated teacher morale − and it hasn’t recovered

GOP attacks against Kamala Harris were already bad – they are about to get worse

  • Written by Stephen J. Farnsworth, Professor of Political Science and Director, Center for Leadership and Media Studies, University of Mary Washington
imageVice President Kamala Harris attends a political event on July 17, 2024, in Kalamazoo, Mich. Chris duMond/Getty Images

Public opinion polls suggest that U.S. Vice President Kamala Harris is doing slightly better than Joe Biden was against Donald Trump, but Republican attacks against her are only now ramping up.

Even as a candidate for vice...

Read more: GOP attacks against Kamala Harris were already bad – they are about to get worse

US says it wants Palestinians to have a country of their own – but its actions say otherwise

  • Written by Dennis Jett, Professor of International Affairs, Penn State
imagePalestinian and Israeli flags fly in old Jerusalem. iStock / Getty Images Plus

Spain, Ireland and Norway recognized a Palestinian state in May 2024, bringing the total number of countries that do so to 144.

The United States is not one of them.

The U.S. has officially favored a two-state solution, meaning both Israel and a Palestinian state would...

Read more: US says it wants Palestinians to have a country of their own – but its actions say otherwise

Amid humanitarian crisis and ongoing fighting, Africa’s war-scarred Sahel region faces new threat: Ethno-mercenaries

  • Written by Yasir Zaidan, Phd Candidate, University of Washington
imageSoldiers of the Rapid Support Forces are being supported by foreign fighters.AP Photo/Hussein Malla

Sudan’s ongoing humanitarian crisis after more than a year of civil war shows few signs of abating. And amid the fighting, a significant and troubling development looks set to complicate the conflict and spread it beyond Sudan’s borders:...

Read more: Amid humanitarian crisis and ongoing fighting, Africa’s war-scarred Sahel region faces new threat:...

More Articles ...

  1. How do 9 states get by with no income tax? A tax expert explains the trade-offs they choose
  2. Bob Newhart was more than an actor or comedian – he was a literary master
  3. Bugs thrive in urban Los Angeles – volunteers’ traps reveal biodiversity hot spots for city insects and spiders
  4. Diabetes and obesity can damage the liver to the point of failure – but few people know their risk of developing liver disease
  5. The Yezidi genocide devastated Iraq’s community 10 years ago − but the roots of the prejudice that fueled it were much deeper
  6. Buses weren’t the only civil rights battleground in Montgomery – the city’s parks still reflect a history of segregation
  7. Until 1968, presidential candidates were picked by party conventions – a process revived by Biden’s withdrawal from race
  8. Massive IT outage spotlights major vulnerabilities in the global information ecosystem
  9. What is Catholic Integralism?
  10. Online rumors sparked by the Trump assassination attempt spread rapidly, on both ends of the political spectrum
  11. Biden’s and Trump’s ages would prevent them running many top companies – and for good reason
  12. How the Ukrainians – with no navy – defeated Russia’s Black Sea Fleet
  13. Affordable housing in God’s backyard: Some religious congregations find a new use for their space
  14. Age would prevent Trump and Biden from running many top companies − and for good reason
  15. Why I turned the ‘Red Dead Redemption II’ video game into a history class on America’s violent past
  16. Sports in extreme heat: How high school athletes can safely prepare for the start of practice, and the warning signs of heat illness
  17. Fewer bees and other pollinating insects lead to shrinking crops
  18. Cutting marketing spending often backfires on businesses – new research could help investors distinguish shortsighted cuts from smart ones
  19. Sports in extreme heat: Warning signs of heat illness and how high school athletes can safely prepare for the start of team practices
  20. Long COVID puzzle pieces are falling into place – the picture is unsettling
  21. Voting rights at risk after Supreme Court makes it harder to challenge racial gerrymandering
  22. After more than 40 years, the federal right to free education for immigrant students finds itself in the crosshairs of conservatives
  23. Heritage Foundation’s ‘Project 2025’ is just the latest action plan from a group with an over 50-year history of steering GOP lawmaking
  24. Late bedtimes and not enough sleep can harm developing brains – and poorer kids are more at risk
  25. Republicans wary of Republicans – how politics became a clue about infection risk during the pandemic
  26. Pennsylvania continues tradition as ‘keystone state’ in presidential elections
  27. What the Catholic Church says about political violence and the need to forgive – even would-be assassins
  28. ‘MAGA BLACK’ hats, clear swag bags, the first Trump/Vance signs: Highlights of what the Smithsonian is archiving from the Republican convention
  29. Baby bull sharks are thriving in Texas and Alabama bays as the Gulf of Mexico warms
  30. How Trump’s appeal to nostalgia deliberately evokes America’s more-racist, more-sexist past
  31. AI mass surveillance at Paris Olympics – a legal scholar on the security boon and privacy nightmare
  32. Supreme Court’s blow to federal agencies’ power will likely weaken abortion rights – 3 issues to watch
  33. The Black fugitive who inspired ‘Uncle Tom’s Cabin’ and the end of US slavery
  34. A short history of the rise, fall and return of Detroit’s Michigan Central Station
  35. Stroke survivors may be saddled with an invisible disability known as spatial neglect – but a simple treatment offers significant improvement
  36. Want to spur your child’s intellectual development? Use audiobooks instead of videos
  37. The Large Hadron Collider gets reset and refreshed each year – a CERN physicist explains how the team uses subatomic splashes to restart the experiments
  38. America faces a power disconnection crisis amid dangerous heat: In 27 states, utilities can shut off electricity for nonpayment even in a heat wave
  39. Social media and political violence – how to break the cycle
  40. Nutrition Facts labels have a complicated legacy – a historian explains the science and politics of translating food into information
  41. Target just became the latest US retailer to stop accepting payment by checks. Why have so many stores given up on them?
  42. Trump-appointed federal judge rules Trump’s classified document case is unconstitutional – here’s how special counsels have been authorized before
  43. How to protect your home from wildfires – here’s what fire prevention experts say is most important
  44. New research suggests estrogen and progesterone could play role in opioid addiction and relapse
  45. Trump’s assassination attempt reveals a major security breakdown – but doesn’t necessarily heighten the risk for political violence, a former FBI official explains
  46. Trump assassination attempt reveals a major security breakdown – but doesn’t necessarily heighten the risk for political violence, a former FBI official explains
  47. Electing a virtuous president would make immunity irrelevant, writes a political philosopher
  48. Decades after Billie Holiday’s death, ‘Strange Fruit’ is still a searing testament to injustice – and of faithful solidarity with suffering
  49. How Smithsonian curators scavenge political conventions to explain the present to the future and save everything from hats to buttons to umbrellas to soap
  50. Could people turn Mars into another Earth? Here’s what it would take to transform its barren landscape into a life-friendly world