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How do scientists calculate the probability that an asteroid could hit Earth?

  • Written by Toshi Hirabayashi, Associate Professor of Aerospace Engineering, Georgia Institute of Technology
imageNASA's Webb telescope captured a photo of the asteroid 2024 YR4 from afar. European Space Agency via AP

I was preparing for my early morning class back in January 2025 when I received a notice regarding an asteroid called 2024 YR4. It said the probability it could hit Earth was unusually high.

As defending Earth from unexpected intruders such as...

Read more: How do scientists calculate the probability that an asteroid could hit Earth?

Trump administration aims to slash funds that preserve the nation’s rich architectural and cultural history

  • Written by Michael R. Allen, Visiting Assistant Professor of History, West Virginia University
imageThe iconic 'Walking Man' Hawkes sign in Westbrook, Maine, was added to the National Register of Historic Places in 2019.Ben McCanna/Portland Portland Press Herald via Getty Images

President Donald Trump’s proposed fiscal year 2026 discretionary budget is called a “skinny budget” because it’s short on line-by-line details.

But...

Read more: Trump administration aims to slash funds that preserve the nation’s rich architectural and...

Grover Norquist’s lasting influence on the GOP and US economic policy

  • Written by Gibbs Knotts, Professor of Political Science, Coastal Carolina University
imageGrover Norquist, president of Americans for Tax Reform, speaks on Capitol Hill on Nov. 7, 2017.Alex Wong/Getty Images

In the “one, big, beautiful bill,” President Donald Trump has called for substantial decreases in federal domestic spending. However, a schism emerged between Republican lawmakers during the budget debates in Congress.

Som...

Read more: Grover Norquist’s lasting influence on the GOP and US economic policy

Checking in on New England’s fishing industry 25 Years after ‘The Perfect Storm’ hit movie theaters

  • Written by Stephanie Otts, Director of National Sea Grant Law Center, University of Mississippi
imageFilming 'The Perfect Storm' in Gloucester Harbor, Mass. The Salem News Historic Photograph Collection, Salem State University Archives and Special Collections, CC BY

Twenty-five years ago, “The Perfect Storm” roared into movie theaters. The disaster flick, starring George Clooney and Mark Wahlberg, was a riveting, fictionalized account...

Read more: Checking in on New England’s fishing industry 25 Years after ‘The Perfect Storm’ hit movie theaters

Why power skills – formerly known as ‘soft skills’ – are the key to business success

  • Written by Sandra Sjoberg, Vice President and Dean, Academic Programs, Western Governors University School of Business

What does it take to lead through complexity, make tough decisions and still put people first? For me, the answer became clear during a defining moment early in my career – one that changed my path entirely.

Today I am a business-school educator, but I began my career in the corporate world. I faced a challenge so intense that it motivated...

Read more: Why power skills – formerly known as ‘soft skills’ – are the key to business success

Checking in on New England fisheries 25 years after ‘The Perfect Storm’ movie

  • Written by Stephanie Otts, Director of National Sea Grant Law Center, University of Mississippi
imageFilming 'The Perfect Storm' in Gloucester Harbor, Mass. The Salem News Historic Photograph Collection, Salem State University Archives and Special Collections, CC BY

Twenty-five years ago, “The Perfect Storm” roared into movie theaters. The disaster flick, starring George Clooney and Mark Wahlberg, was a riveting, fictionalized account...

Read more: Checking in on New England fisheries 25 years after ‘The Perfect Storm’ movie

Blocking exports and raising tariffs is a bad defense against industrial cyber espionage, study shows

  • Written by William Akoto, Assistant Professor of Global Security, American University
imageCutting off China's access to advanced U.S. chips is likely to motivate Chinese cyber espionage.kritsapong jieantaratip/iStock via Getty Images

The United States is trying to decouple its economy from rivals like China. Efforts toward this include policymakers raising tariffs on Chinese goods, blocking exports of advanced technology and offering sub...

Read more: Blocking exports and raising tariffs is a bad defense against industrial cyber espionage, study...

Mitochondria can sense bacteria and trigger your immune system to trap them – revealing new ways to treat infections and autoimmunity 

  • Written by Andrew Monteith, Assistant Professor of Microbiology, University of Tennessee
imageNeutrophils (yellow) eject a NET (green) to ensnare bacteria (purple). Other cells, such as red blood cells (orange), may also get trapped.CHDENK/Wikimedia Commons, CC BY-SA

Mitochondria have primarily been known as the energy-producing components of cells. But scientists are increasingly discovering that these small organelles do much more than...

Read more: Mitochondria can sense bacteria and trigger your immune system to trap them – revealing new ways...

More than half of US teens have had at least one cavity, but fluoride programs in schools help prevent them – new research

  • Written by Christina Scherrer, Professor of Industrial and Systems Engineering, Kennesaw State University
imageThe research looked at the results of 31 studies and a total sample of more than 60,000 students.monkeybusinessimages/iStock via Getty Images Plus

Programs delivering fluoride varnish in schools significantly reduce cavities in children. That is a key finding of our recently published study in the American Journal of Preventive Medicine.

Fluoride...

Read more: More than half of US teens have had at least one cavity, but fluoride programs in schools help...

Philly psychology students map out local landmarks and hidden destinations where they feel happiest

  • Written by Eric Zillmer, Professor of Neuropsychology, Drexel University
imageRittenhouse Square Park in Center City made it onto the Philly Happiness Map.Matthew Lovette/Jumping Rocks/Universal Images Group via Getty Images

What makes you happy? Perhaps a good night’s sleep, or a wonderful meal with friends?

I am the director of the Happiness Lab at Drexel University, where I also teach a course on happiness. The...

Read more: Philly psychology students map out local landmarks and hidden destinations where they feel happiest

More Articles ...

  1. Ceasefires like the one between Iran and Israel often fail – but an agreement with specific conditions is more likely to hold
  2. Israel bombed an Iraqi nuclear reactor in 1981 − it pushed program underground and spurred Saddam Hussein’s desire for nukes
  3. Supreme Court rules Trump can rapidly deport immigrants to Libya, South Sudan and other countries they aren’t from
  4. How Internet of Things devices affect your privacy – even when they’re not yours
  5. Federal energy office illustrates the perils of fluctuating budgets and priorities
  6. ‘Monkey Biz-ness’: Pop culture helped fan the flames of the Scopes ‘monkey trial’ 100 years ago − and ever since
  7. 3D-printed model of a 500-year-old prosthetic hand hints at life of a Renaissance amputee
  8. The Vera C. Rubin Observatory will help astronomers investigate dark matter, continuing the legacy of its pioneering namesake
  9. Diversifying the special education teacher workforce could benefit US schools
  10. Charitable giving grew to $593B in 2024, propelled by a strengthening US economy and a booming stock market
  11. Presidents of both parties have launched military action without Congress declaring war − Trump’s bombing of Iran is just the latest
  12. How the end of carbon capture could spark a new industrial revolution
  13. 3 years after abortion rights were overturned, contraception access is at risk
  14. To spur the construction of affordable, resilient homes, the future is concrete
  15. Astronomy has a major data problem – simulating realistic images of the sky can help train algorithms
  16. Neuropathic pain has no immediate cause – research on a brain receptor may help stop this hard-to-treat condition
  17. I’m an expert in crafting public health messages: Here are 3 marketing strategies I use to make Philadelphia healthier
  18. How do atoms form? A physicist explains where the atoms that make up everything around come from
  19. The sleeper Supreme Court decision that could have profound impacts on the Trump administration agenda – and restore faith in the high court
  20. No country for old business owners: Economic shifts create a growing challenge for America’s aging entrepreneurs
  21. After the smoke clears, a wildfire’s legacy can haunt rivers for years, putting drinking water at risk
  22. US bombs Iran’s nuclear sites: What led to Trump pulling the trigger – and what happens next?
  23. Outsourcing cost of ‘impact’ data could mean 13% more bang for every charitable buck
  24. A militarily degraded Iran may turn to asymmetrical warfare – raising risk of proxy and cyber attacks
  25. How artificial intelligence controls your health insurance coverage
  26. What is CREC? The Christian nationalist group has a vision for America − and Defense Secretary Pete Hegseth’s support
  27. At Antarctica’s midwinter, a look back at the frozen continent’s long history of dark behavior
  28. Low-income homeowners hit by disasters may get less help from the government, as Trump administration nixes rules on fairness, community input and resilience
  29. Nuclear scientists  have long been targets in covert ops – Israel has brought that policy out of the shadows
  30. Nuclear scientists have long been targets in covert ops – Israel has brought that policy out of the shadows
  31. How to stay safe during heat waves – and the heat stroke warning signs to watch for
  32. How to stay safe during heat waves – and heat stroke warning signs to watch for
  33. Light-powered reactions could make the chemical manufacturing industry more energy-efficient
  34. Trump administration’s conflicting messages on Chinese student visas reflect complex US-China relations
  35. Metro Detroit is growing – but its suburbs are telling a more complicated story
  36. Family and friends shoulder the real cost of dementia − $224B in unpaid care
  37. The term ‘lone gunman’ ignores the structures that enable violence
  38. 50 years after ‘Jaws,’ researchers have retired the man-eater myth and revealed more about sharks’ amazing biology
  39. Grok’s ‘white genocide’ responses show how generative AI can be weaponized
  40. Smartphones are once again setting the agenda for justice as the Latino community documents ICE actions
  41. Expansion of marriage rights to same-sex couples also expanded access to the psychological benefits that come with tying the knot
  42. Ticks carry decades of history in each troublesome bite
  43. AI helps tell snow leopards apart, improving population counts for these majestic mountain predators
  44. Germany’s young Jewish and Muslim writers are speaking for themselves – exploring immigrant identity beyond stereotypes
  45. ‘Jaws’ and the two musical notes that changed Hollywood forever
  46. Southeast Asian nations look to hedge their way out of troubled waters in the South China Sea
  47. The commitment trap: How Israel, Iran and the US risk becoming prisoners to policies
  48. Gay Men’s Health Crisis showed how everyday people stepped up when institutions failed during the height of the AIDS epidemic – providing a model for today
  49. US and Iran have a long, complicated history, spanning far beyond Israel’s strikes on Tehran
  50. US and Iran have a long, complicated history, spanning decades before US strikes on nuclear sites