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Is ranch dressing a liquid or a solid? A physicist explains

  • Written by Rae Robertson-Anderson, Professor of Physics & Biophysics, University of San Diego
imageIt pours like a liquid but maintains its shape like a solid.Jack Andersen/Stone via Getty Images

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.

Is ranch dressing a liquid or a solid? – Gabriel, age 8, DeLand, Florida

Imagine...

Read more: Is ranch dressing a liquid or a solid? A physicist explains

America is becoming a nation of homebodies

  • Written by Brian D. Taylor, Professor of Urban Planning and Public Policy, University of California, Los Angeles
imageThe COVID-19 pandemic merely accelerated a trend that began in 2003.C.P. George/ClassicStock via Getty Images

In his February 2025 cover story for The Atlantic, journalist Derek Thompson dubbed our current era “the anti-social century.”

He isn’t wrong. According to our recent research, the U.S. is becoming a nation of homebodies.

Us...

Read more: America is becoming a nation of homebodies

5 reasons veterans are especially hard-hit by federal cuts

  • Written by Jamie Rowen, Associate Professor of Legal Studies and Political Science, UMass Amherst
imageA protester holds a sign during a demonstration against President Donald Trump, Elon Musk and the Trump administration outside the Indiana Statehouse in Indianapolis. Jeremy Hogan/SOPA Images/LightRocket via Getty Images

The Department of Veterans Affairs is planning to cut 83,000 jobs, slashing employment by over 17% at the federal agency that...

Read more: 5 reasons veterans are especially hard-hit by federal cuts

Daylight saving time and early school start times cost billions in lost productivity and health care expenses

  • Written by Joanna Fong-Isariyawongse, Associate Professor of Neurology, University of Pittsburgh
imageDaylight saving time kicks in on March 9, 2025, but some say it leads to more heart attacks, depression and car accidents.Lord Henri Voton/E+ via Getty Images

Investigations into the 1986 Space Shuttle Challenger disaster revealed that key decision-makers worked on little sleep, raising concerns that fatigue impaired their judgment. Similarly, in...

Read more: Daylight saving time and early school start times cost billions in lost productivity and health...

How Trump’s $2B court battle over foreign aid could reshape executive authority

  • Written by Charles Wise, Professor Emeritus of Public Affairs, The Ohio State University
imageA sign outside of the U.S. Agency for International Development building in Washington, D.C. Bryan Dozier/Middle East Images/AFP via Getty Images

Amid the chaos of the Trump administration’s first few weeks in office, a court case regarding the president’s legal right to stop payment of nearly US$2 billion in U.S. Agency for...

Read more: How Trump’s $2B court battle over foreign aid could reshape executive authority

Pause in aid has introduced uncertainty into Ukraine’s military planning − forever changing its war calculus

  • Written by Benjamin Jensen, Professor of Strategic Studies at the Marine Corps University School of Advanced Warfighting; Scholar-in-Residence, American University School of International Service
imageIs the Sun setting on Ukraine's offensive capabilities?Diego Herrera Carcedo/Anadolu via Getty Images

War is a numbers game. Each side involved must marshal the supplies, troops and firepower needed to sustain the fight, thwart advancing armies and, hopefully, prevail.

But it’s also a game of uncertainty.

For the past three years,...

Read more: Pause in aid has introduced uncertainty into Ukraine’s military planning − forever changing its...

NIH funding cuts will hit red states, rural areas and underserved communities the hardest

  • Written by Prakash Nagarkatti, Professor of Pathology, Microbiology and Immunology, University of South Carolina
imageProtesters on the University of Illinois Chicago campus raise concerns over funding cuts for medical research on Feb. 19, 2025.Scott Olson via Getty Images

The National Institutes of Health is the largest federal funder of medical research in the U.S. NIH funds drive research and innovation, leading to better understanding and treatment of diseases...

Read more: NIH funding cuts will hit red states, rural areas and underserved communities the hardest

‘Pac-Man with a ponytail’ proteins regulate everything from night vision to heartbeats – studying what GRKs look like could improve an array of drugs

  • Written by Priyanka Naik, Ph.D. Candidate in Structural Biology, Purdue University
imageRhodopsin kinase – GRK1 – is a GRK found in the retina of your eyes.Priyanka Naik, CC BY-ND

Each cell in your body relies on precise communication with other cells to function properly. At the center of this process are the molecular switches that turn communication signals in the body on and off. These molecules are key players in...

Read more: ‘Pac-Man with a ponytail’ proteins regulate everything from night vision to heartbeats – studying...

What Amazon MGM’s creative control over the James Bond film franchise means for the future of 007

  • Written by Colin Burnett, Associate Professor of Film and Media Studies, Washington University in St. Louis
imageDaniel Craig played James Bond in five films from 2006 to 2021.Greg Williams/Eon Productions via Getty Images

James Bond was front and center at the 2025 Academy Awards – and in a somewhat curious way.

In a musical number, Lisa of Blackpink, Doja Cat and Raye sang the Bond theme songs “Live and Let Die,” “Diamonds Are...

Read more: What Amazon MGM’s creative control over the James Bond film franchise means for the future of 007

Exhausted by the news? Here are 6 strategies to stay informed without getting overwhelmed − or misled by misinformation

  • Written by Seth Ashley, Professor of Communication and Media, Boise State University
imageNot all news sources are created equal.Noah Berger/AP Images

Political spin is nothing new, and identifying reliable news and information can be hard to do during any presidency. But the return of Donald Trump to the White House has reignited debates over truth, accountability and the role of media in a deeply divided America.

Misinformation is an...

Read more: Exhausted by the news? Here are 6 strategies to stay informed without getting overwhelmed − or...

More Articles ...

  1. The US has pardoned insurrectionists twice before – and both times, years of violent racism followed
  2. Beyond AI regulation: How government and industry can team up to make the technology safer without hindering innovation
  3. Knocking down abandoned buildings has a lot of benefits for Detroit − but it’s costly for cities
  4. Why getting the numbers right isn’t enough for pollsters to be credible in today’s polarized climate
  5. Butterflies declined by 22% in just 2 decades across the US – there are ways you can help save them
  6. How 18F transformed government technology − and why its elimination matters
  7. Anger is a flow of emotion like water through a hose − at work, it helps to know when to turn it up or down and how to direct it
  8. DOGE threat: How government data would give an AI company extraordinary power
  9. As tuberculosis cases rise in the US and worldwide, health officials puzzle over the resurgence of a disease once in decline
  10. What’s that microplastic? Advances in machine learning are making identifying plastics in the environment more reliable
  11. Why Muslim American nonprofits are taking steps to build trust with donors during Ramadan
  12. Death by firing squad set to resume in the US – but no matter the method, all means of execution come with a troubling history
  13. Philly’s street fentanyl contains an industrial chemical called BTMPS that’s an ingredient in plastic
  14. The US energy market has its troubles, though it may not be a ‘national emergency’
  15. Carolina wildfires followed months of weather whiplash, from drought to hurricane-fueled floods and back to drought
  16. The child boss in ‘Severance’ reveals a devastating truth about work and child-rearing in the 21st century
  17. Supreme Court sides with San Francisco, requiring EPA to set specific targets in water pollution permits
  18. COVID-19 is the latest epidemic to show biomedical breakthroughs aren’t enough to eliminate a disease
  19. Learning ethics − one Marvel movie at a time
  20. USAID’s history shows decades of good work on behalf of America’s global interests, although not all its projects succeeded
  21. Influencers have trouble figuring out their tax obligations − and with good reason
  22. Trump is the kinglike president many feared when arguing over the US Constitution in 1789 – and his address to Congress showed it
  23. A potential $110B economic hit: How Trump’s tariffs could mean rising costs for families, strain for states
  24. Extreme heat silently accelerates aging on a molecular level − new research
  25. Gifts from top 50 US philanthropists rebounded to $16B in 2024 − Mike Bloomberg; Reed Hastings and Patty Quillin; and Michael and Susan Dell lead the list of biggest givers
  26. Chairman of the Joint Chiefs advises the president on use of America’s military power
  27. How the hidden epidemic of violence against nurses affects health care
  28. How Trump’s second term might affect the market and your finances
  29. Many more Denver teens have experienced homelessness than official counts show
  30. Out-of-balance bacteria is linked to multiple sclerosis − the ratio can predict severity of disease
  31. How are clouds’ shapes made? A scientist explains the different cloud types and how they help forecast weather
  32. GOP lawmakers commit to big spending cuts, putting Medicaid under a spotlight – but trimming the low-income health insurance program would be hard
  33. Who’s who at the Vatican?
  34. What is isolationism? The history and politics of an often-maligned foreign policy concept
  35. From opposing robber barons to the New Deal to desegregation to DOGE, state attorneys general have long taken on Washington
  36. America’s designs on annexing Canada have a long history − and record of political failures
  37. What is Tren de Aragua? How the Venezuelan gang started − and why US policies may only make it stronger
  38. The only ‘winner’ here is Putin: Ukraine unites in response to Trump-Zelenskyy spat and resigns itself to new reality
  39. How Trump’s compulsion to dominate sabotages dealmaking, undermines democracy and threatens global stability
  40. Making English the official US language can’t erase the fact that the US has millions of Spanish speakers and a long multilingual history
  41. As flu cases break records this year, vaccine rates are declining, particularly for children and 65+ adults
  42. Texas records first US measles death in 10 years – a medical epidemiologist explains how to protect yourself and your community from this deadly, preventable disease
  43. Coastal economies rely on NOAA, from Maine to Florida, Texas and Alaska – even if they don’t realize it
  44. Just having a pet doesn’t help mental health – but pet-owners with secure relationships with their pets are less depressed
  45. What are conflicts of interest and what can be done about them?
  46. What’s a constitutional crisis? Here’s how Trump’s recent moves are challenging the Constitution’s separation of powers
  47. As the Kremlin eyes a thaw with the White House, Russia’s pro-war hawks aren’t too happy
  48. The science behind airplane deicing – a mechanical engineer explains how chemistry and physics make flying a more uplifting experience
  49. Maple seeds’ unique spinning motion allows them to travel far even in the rain, a new study shows
  50. Is a united European voice possible in the age of Trump, Putin and far-right politics? Germany’s new leader intends to find out