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Sugar starts corroding your teeth within seconds – here’s how to protect your pearly whites from decay

  • Written by José Lemos, Professor of Oral Biology, University of Florida
imageSugar feeds the colonies of bacteria living in your mouth and surrounding your teeth.Andrii Zastrozhnov/iStock via Getty Images Plus

Between Halloween candy, Thanksgiving pies and holiday cookies, the end of the year is often packed with opportunities to consume sugar. But what happens in your mouth during those first minutes and hours after eating...

Read more: Sugar starts corroding your teeth within seconds – here’s how to protect your pearly whites from...

Google plans to power a new data center with fossil fuels, yet release almost no emissions – here’s how its carbon capture tech works

  • Written by Ramesh Agarwal, Professor of Engineering, Washington University in St. Louis
imageCarbon capture and storage projects capture carbon dioxide emissions from industrial facilities and power plants and pipe them underground to geological formations.Nopphinan/iStock/Getty Images Plus

As AI data centers spring up across the country, their energy demand and resulting greenhouse gas emissions are raising concerns. With servers and...

Read more: Google plans to power a new data center with fossil fuels, yet release almost no emissions –...

High-speed rail moves millions throughout the world every day – but in the US, high cost and low use make its future bumpy

  • Written by Stephen Mattingly, Professor of Civil Engineering, University of Texas at Arlington
imageThe Amtrak NextGen Acela is a new high-speed train that runs between Washington, D.C. and Boston.Saul Loeb/AFP via Getty Images

High-speed rail systems are found all over the globe. Japan’s bullet train began operating in 1964. China will have 31,000 miles (50,000 kilometers) of high-speed track by the end of 2025. The fastest train in Europe...

Read more: High-speed rail moves millions throughout the world every day – but in the US, high cost and low...

Ranked choice voting outperforms the winner-take-all system used to elect nearly every US politician

  • Written by Ismar Volić, Professor of Mathematics, Director of Institute for Mathematics and Democracy, Wellesley College
imageRanked choice voting makes use of more information from the voters than plurality voting.stefanamer/Getty Images

American democracy is straining under countless pressures, many of them rooted in structural problems that go back to the nation’s founding. Chief among them is the “pick one” plurality voting system – also called...

Read more: Ranked choice voting outperforms the winner-take-all system used to elect nearly every US politician

Why protecting Colorado children from dying of domestic violence is such a hard problem

  • Written by Kaitlyn M. Sims, Assistant Professor of Public Policy, University of Denver; Institute for Humane Studies
imageMore than one-third of homicides of women are perpetrated by intimate partners, and there has been a steady increase in domestic violence-related deaths of children.Alvaro Medina Jurado/Getty Images

A record number of Colorado children died in 2024 as a result of domestic violence, despite a statewide reduction in overall homicide.

Of the eight...

Read more: Why protecting Colorado children from dying of domestic violence is such a hard problem

We are hardwired to sing − and it’s good for us, too

  • Written by Elinor Harrison, Lecturer, Performing Arts Department, Faculty Affiliate, Philosophy-Neuroscience-Psychology, Washington University in St. Louis
imageGospel choir director Clyde Lawrence performs at the New Orleans Jazz & Heritage Festival on April 25, 2025. AP Photo/Gerald Herbert

On the first Sunday after being named leader of the Catholic Church in May 2025, Pope Leo XIV stood on the balcony of St. Peter’s Basilica in Rome and addressed the tens of thousands of people gathered....

Read more: We are hardwired to sing − and it’s good for us, too

Winter storms blanket the East, while the U.S. West is wondering: Where’s the snow?

  • Written by Adrienne Marshall, Assistant Professor of Geology and Geological Engineering, Colorado School of Mines
imageMuch of the West has seen a slow start to the 2026 snow season.Hyoung Chang/The Denver Post

Ski season is here, but while the eastern half of the U.S. digs out from winter storms, the western U.S. snow season has been off to a very slow start.

The snowpack was far below normal across most of the West on Dec. 1, 2025. Denver didn’t see its...

Read more: Winter storms blanket the East, while the U.S. West is wondering: Where’s the snow?

Winter storms blanket the East, while the US West is wondering: Where’s the snow?

  • Written by Adrienne Marshall, Assistant Professor of Geology and Geological Engineering, Colorado School of Mines
imageMuch of the West has seen a slow start to the 2026 snow season.Hyoung Chang/The Denver Post

Ski season is here, but while the eastern half of the U.S. digs out from wintery storms, the western U.S. snow season has been off to a very slow start.

The snowpack was far below normal across most of the West on Dec. 1, 2025. Denver didn’t see its...

Read more: Winter storms blanket the East, while the US West is wondering: Where’s the snow?

Stalin’s postwar terror targeted Soviet Jews – in the name of ‘anti-cosmopolitanism’

  • Written by Wendy Z. Goldman, Professor of History, Carnegie Mellon University
imageA plaque in Russia commemorates the Jewish Anti-Fascist Committee, whose leaders were executed in August 1952.Adam Baker/Flickr via Wikimedia Commons, CC BY

Many Americans know of Josef Stalin’s Terror of the late 1930s, during which more than 1 million people were arrested for political crimes, and over 680,000 executed.

Fewer know about the...

Read more: Stalin’s postwar terror targeted Soviet Jews – in the name of ‘anti-cosmopolitanism’

Rural high school students are more likely than city kids to get their diplomas, but they remain less likely to go to college

  • Written by Sheneka Williams, Professor of Educational Administration, Michigan State University
imageA high school junior looks over a farm where he works in Perry, N.Y., in March 2025. Lauren Petracca/Associated Press

Many high school seniors are currently in the midst of the college application process or are already waiting to hear back from their selected schools.

For high school students in rural parts of the United States, the frantic pace...

Read more: Rural high school students are more likely than city kids to get their diplomas, but they remain...

More Articles ...

  1. Texas cities have some of the highest preterm birth rates in the US, highlighting maternal health crisis nationwide
  2. New York’s wealthy warn of a tax exodus after Mamdani’s win – but the data says otherwise
  3. Why do people get headaches and migraines? A child neurologist explains the science of head pain and how to treat it
  4. When the world’s largest battery power plant caught fire, toxic metals rained down – wetlands captured the fallout
  5. Speaker Johnson’s choice to lead by following the president goes against 200 years of House speakers building up the office’s power
  6. Iran’s president calls for moving its drought-stricken capital amid a worsening water crisis – how Tehran got into water bankruptcy
  7. Guinea-Bissau’s military takeover highlights the nation’s sorry history of coups and a deepening crisis across the region
  8. Drones, physics and rats: Studies show how the people of Rapa Nui made and moved the giant statues – and what caused the island’s deforestation
  9. As US hunger rises, Trump administration’s ‘efficiency’ goals cause massive food waste
  10. A year on, the Israeli-Lebanese ceasefire looks increasingly fragile − could a return to cyclical violence come next?
  11. How does Narcan work? Mapping how it reverses opioid overdose can provide a molecular blueprint for more effective drugs
  12. Absence of evidence is not evidence of absence – and that affects what scientific journals choose to publish
  13. George Plimpton’s 1966 nonfiction classic ‘Paper Lion’ revealed the bruising truths of Detroit Lions training camp
  14. Pentagon investigation of Sen. Mark Kelly revives Cold War persecution of Americans with supposedly disloyal views
  15. A database could help revive the Arapaho language before its last speakers are gone
  16. How food assistance programs can feed families and nourish their dignity
  17. What makes a true Santa is inside – and comes with the red suit
  18. ‘Without prejudice’: What this 2-word legalese means for the dismissed charges against James Comey and Letitia James
  19. From concrete to community: How synthetic data can make urban digital twins more humane
  20. The ChatGPT effect: In 3 years the AI chatbot has changed the way people look things up
  21. When darkness shines: How dark stars could illuminate the early universe
  22. Fern stems reveal secrets of evolution – how constraints in development can lead to new forms
  23. A quarter of early child care educators in Colorado reported mistreatment from co-workers
  24. Sea level doesn’t rise at the same rate everywhere – we mapped where Antarctica’s ice melt would have the biggest impact
  25. Automated systems decide which homeless Philadelphians get housing and who stays on the street – often in ways that feel arbitrary to those waiting
  26. Treating love for work like a virtue can backfire on employees and teams
  27. Colleges teach the most valuable career skills when they don’t stick narrowly to preprofessional education
  28. Thousands of genomes reveal the wild wolf genes in most dogs’ DNA
  29. Peace plan presented by the US to Ukraine reflects inexperienced, unrealistic handling of a delicate situation
  30. Writing builds resilience by changing your brain, helping you face everyday challenges
  31. More than half of new articles on the internet are being written by AI – is human writing headed for extinction?
  32. Nonprofit news outlets are often scared that selling ads could jeopardize their tax-exempt status, but IRS records show that’s been rare
  33. How will the universe end?
  34. AI is making spacecraft propulsion more efficient – and could even lead to nuclear-powered rockets
  35. Mid-Atlantic mushroom foragers collect 160 species for food, medicine, art and science
  36. We created health guidelines for fighting loneliness - here’s what we recommend
  37. Nick Fuentes is a master of exploiting the current social media opportunities for extremism
  38. What Robert F. Kennedy Jr. didn’t tell you about ‘Operation Northwoods,’ the false flag operation he loves to denounce
  39. From invasive species tracking to water security – what’s lost with federal funding cuts at US Climate Adaptation Science Centers
  40. Just follow orders or obey the law? What US troops told us about refusing illegal commands
  41. Colorado is pumping the brakes on first-of-its-kind AI regulation to find a practical path forward
  42. The plague of frog costumes demonstrates the subversive power of play in protests
  43. John Fetterman is an unusual politician – but his rise from borough mayor to US senator reflects a recent trend
  44. Making GLP-1 weight loss drugs cheaper isn’t enough to address America’s obesity problem – here’s why
  45. Off-label use of COVID-19 vaccines was once discouraged but has become common amid new guidelines
  46. From ‘mail-order brides’ to ‘passport bros,’ the international dating industry often sells traditional gender roles
  47. $2B Counter-Strike 2 crash exposes a legal black hole: Your digital investments aren’t really yours
  48. Farmers – long Trump backers – bear the costs of new tariffs, restricted immigration and slashed renewable energy subsidies
  49. First Amendment in flux: When free speech protections came up against the Red Scare
  50. AI is providing emotional support for employees – but is it a valuable tool or privacy threat?