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From using plant rinds to high-tech materials, bike helmets have improved significantly over the past 2 centuries

  • Written by Jud Ready, Principal Research Engineer in Materials Science and Engineering, Georgia Institute of Technology
imageModern bike helmets are made through complex materials engineering.Johner Images via Getty Images

Imagine – it’s the mid-1800s, and you’re riding your high-wheeled, penny-farthing bicycle down a dusty road. Sure, it may have some bumps, but if you lose your balance, you’re landing on a relatively soft dirt road. But as the...

Read more: From using plant rinds to high-tech materials, bike helmets have improved significantly over the...

Why school police officers may not be the most effective way to prevent violence

  • Written by Monic Behnken, Associate Dean, Department of Sociology and Criminal Justice, Iowa State University
imageResearch shows school police officers may subconsciously make students feel less safe.Portland Press Herald via Getty Images

In 1975, only 1% of public schools had their own police officers. Today, 44% do. A large reason for the increase is the Violent Crime Control and Law Enforcement Act of 1994, which led to the creation of the federal Community...

Read more: Why school police officers may not be the most effective way to prevent violence

Philadelphia students have a new reading and writing curriculum − a literacy expert explains what’s changing

  • Written by Mary Jean Tecce DeCarlo, Clinical Professor of Literacy Studies, Drexel University
imageThe new curriculum replaces a homegrown curriculum created by Philadelphia teachers.kali9/E+ Collection via Getty Images

Philadelphia’s K-8 public school students are being taught a new literacy curriculum starting in the 2024-2025 school year. It’s called Expeditionary Learning, and it conforms with what literacy experts call the scienc...

Read more: Philadelphia students have a new reading and writing curriculum − a literacy expert explains...

Donor-advised funds are drawing a lot of assets besides cash – taking a bigger bite out of tax revenue than other kinds of charitable giving

  • Written by Brian Mittendorf, Professor of Accounting, The Ohio State University
imageThe total value of assets held by donor-advised funds is soaring.imaginima/E+ via Getty Images

Donor-advised funds, or DAFs, are financial accounts funded by donors to support future charitable work. This kind of giving differs greatly from charitable giving as a whole because it’s much more likely to involve donations of assets like stock,...

Read more: Donor-advised funds are drawing a lot of assets besides cash – taking a bigger bite out of tax...

Why do I feel better when I wake myself up instead of relying on an alarm? A neurologist explains the science of a restful night’s sleep

  • Written by Beth Ann Malow, Professor of Neurology and Pediatrics, Vanderbilt University
imageYour internal body clock can help wake you up without an alarm.Riska/E+ via Getty Imagesimage

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.

Why do I feel better rested when I wake myself up than I do if my alarm or another person wakes me up?...

Read more: Why do I feel better when I wake myself up instead of relying on an alarm? A neurologist explains...

Dorothy Allison was an authentic voice for the poor, capturing the beauty, humor and pain of working-class life in America

  • Written by Lennard J. Davis, Distinguished Professor of English, Disability Studies and Medical Education, University of Illinois Chicago
imageDorothy Allison channeled her impoverished childhood into a richly crafted world that retained its gritty origins.Sophie Bassouls/Sygma via Getty Images

Dorothy Allison, who died on Nov. 5, 2024, published her first novel, “Bastard Out of Carolina,” in 1992, when she was 42 years old.

She mined her own life to craft the...

Read more: Dorothy Allison was an authentic voice for the poor, capturing the beauty, humor and pain of...

Populist podcasters love RFK, Jr., and he took the same left-right turn toward Trump as they did

  • Written by Rachel Meade, Lecturer of Political Science, Boston University
imageRobert F. Kennedy Jr., a onetime Democrat, endorsed Trump on Aug. 23, 2024, after ending his independent presidential bid.AP Photo/Evan Vucci

Robert F. Kennedy Jr. is Donald Trump’s pick to lead the Department of Health and Human Services in the new administration. The idea of Trump, a Republican, appointing Kennedy to his cabinet would have...

Read more: Populist podcasters love RFK, Jr., and he took the same left-right turn toward Trump as they did

Better but not stellar: Pollsters faced familiar complaints, difficulties in assessing Trump-Harris race

  • Written by W. Joseph Campbell, Professor Emeritus of Communication, American University School of Communication
imageCNN's Magic Wall map with U.S. presidential results is seen on a mobile phone on Nov. 7, 2024. Beata Zawrzel/NurPhoto via Getty Images

An oracle erred badly. The most impressive results were turned in by a little-known company in Brazil. A nagging problem reemerged, and some media critics turned profane in their assessments.

So it went for...

Read more: Better but not stellar: Pollsters faced familiar complaints, difficulties in assessing...

Campus diversity is becoming difficult to measure as students keep their race and ethnicity hidden on college applications

  • Written by Karly Sarita Ford, Associate Professor of Education and Sociology, Penn State
imageMore students are listing 'race unknown' on their college applications. Ariel Skelley/DigitalVision via Getty Images

When the Supreme Court struck down race-based admissions at American colleges and universities just over a year ago, many predicted U.S. campuses would become much less diverse. But in part due to students who decide not to disclose...

Read more: Campus diversity is becoming difficult to measure as students keep their race and ethnicity hidden...

Saltwater flooding is a serious fire threat for EVs and other devices with lithium-ion batteries

  • Written by Xinyu Huang, Associate Professor of Mechanical Engineering, University of South Carolina
imageFlooded cars in Clearwater, Fla., after the arrival of Hurricane Milton on Oct. 10, 2024. Spencer Platt/Getty Images

Flooding from hurricanes Helene and Milton inflicted billions of dollars in damage across the Southeast in September and October 2024, pushing buildings off their foundations and undercutting roads and bridges. It also caused dozens...

Read more: Saltwater flooding is a serious fire threat for EVs and other devices with lithium-ion batteries

More Articles ...

  1. Knee problems tend to flare up as you age – an orthopedic specialist explains available treatment options
  2. As the Taurid meteor shower passes by Earth, pseudoscience rains down – and obscures a potential real threat from space
  3. Get chronic UTIs? Future treatments may add more bacteria to your bladder to beat back harmful microbes
  4. Indonesia president’s diplomatic dash takes in China and US − but a Trump presidency may see the aspiring regional powerhouse tilt more toward Beijing
  5. Untreated sewage and fertilizer runoff threaten the Florida manatee’s main food source, contributing to malnutrition
  6. Campuses are ground zero in debates about antisemitism − but that’s been true for 100 years
  7. Republican lawmakers will reshape tax policy in 2025 — a tax expert explains what to expect
  8. 3 innovative ways to help countries hit by climate disasters, beyond a loss and damage fund
  9. Hundreds of 19th-century skulls collected in the name of medical science tell a story of who mattered and who didn’t
  10. Federal judge rules that Louisiana shalt not require public schools to post the Ten Commandments
  11. Poor teacher training partly to blame for stalled engineering diversity goals
  12. Asking ChatGPT vs Googling: Can AI chatbots boost human creativity?
  13. Brain-training games remain unproven, but research shows what sorts of activities do benefit cognitive functioning
  14. One election victory does not make a new era in American politics − here’s what history shows
  15. Informal safety nets help many Americans with expenses – people at all income levels benefit from this ‘financial interdependence’
  16. US states are finally starting to put in place protections for the kids of family vloggers
  17. Weight loss plans are less effective for many Black women − because existing ones often don’t meet their unique needs
  18. Mothers, metaphors and dyslexia: What language reveals about the challenges of a child’s learning disability
  19. Socioeconomic status explains most of the racial and ethnic achievement gaps in elementary school
  20. In hundreds of communities across the US, finding a dentist is like pulling teeth − but in 14 states, dental therapists are filling the gap
  21. Countries spend huge sums on fossil fuel subsidies – why they’re so hard to eliminate
  22. 3 reasons why a Trump White House might not be a disaster for Ukraine − in fact, it might tighten the screws on Russia
  23. Racism is such a touchy topic that many US educators avoid it – we are college professors who tackled that challenge head on
  24. Papal elections aren’t always as dramatic as ‘Conclave’ – but the history behind the process is
  25. Here’s what happens when a school is located near a cannabis dispensary
  26. Most US book bans target children’s literature featuring diverse characters and authors of color
  27. Jails and prisons often fail to protect incarcerated people during natural disasters
  28. Missing link to Snowball Earth history emerges from some unusual rocks on Colorado’s Pikes Peak
  29. Evidence from Snowball Earth found in ancient rocks on Colorado’s Pikes Peak – it’s a missing link
  30. Soaring inflation helped lead Trump to victory – here’s why some of his policies might drive prices higher again
  31. Trump voters said they were angry about the economy – many of them had a point
  32. I’m a neuroscientist who taught rats to drive − their joy suggests how anticipating fun can enrich human life
  33. Why does everything look flat even though the Earth is round?
  34. How the Taliban are seeking to reshape Afghanistan’s schools to push their ideology
  35. How updated Vatican rules on validating supernatural appearances of Mary will affect the famed pilgrimage site of Medjugorje
  36. Companies are buying up cheap carbon offsets − data suggest it may be more about greenwashing than helping the climate
  37. Companies are buying up cheap carbon offsets − data suggest it’s more about greenwashing than helping the climate
  38. ‘Inflation is radioactive’: Trump’s victory is part of a global populist wave of voters throwing out incumbents
  39. Voters in Arab American strongholds likely tipped Michigan in Trump’s favor
  40. Pennsylvania will keep its divided legislature thanks to split-ticket voters
  41. Boeing workers secure big gains after strike, but the future for organized labor under Trump is uncertain
  42. What should journalists do when the facts don’t matter?
  43. What’s the ‘standard deduction’? An accounting expert explains how it simplifies tax filing and saves most Americans money
  44. Trump’s plans to extend tax cuts and slash red tape will likely spur economic growth − but there’s a cost
  45. Disaster survivors want to rebuild safer, more sustainable homes, but cost misperceptions often stand in the way
  46. Strength training early in life can set up kids and adolescents for a lifetime of health and well-being
  47. 10 states had abortion measures on the ballot – where they passed, where they failed, and what it all means
  48. Compassion amid chaos − how one of America’s greatest poets became a lifeline for wounded soldiers
  49. The election is over − but what is a ‘lame duck’ anyway?
  50. Is AI dominance inevitable? A technology ethicist says no, actually