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The Conversation

Inside an urban heat island, one street can be much hotter than its neighbor – new tech makes it easier to target cooling projects

  • Written by Dan O'Brien, Professor of Public Policy and Urban Affairs and Director of the Boston Area Research Initiative, Northeastern University
imageA tree canopy can make a big difference in temperature for people on the street below. The challenge is getting trees where they're needed most.Andrey Denisyuk/Moment via Getty Images

It’s summer, and it’s been hot, even in northern cities such as Boston. But not everyone is hit with the heat in the same way, even within the same...

Read more: Inside an urban heat island, one street can be much hotter than its neighbor – new tech makes it...

What is rust? A materials scientist explains metal’s crusty enemy

  • Written by Guangwen Zhou, Professor of Mechanical Engineering, Binghamton University, State University of New York
imageRust can attack the surfaces of old metal objects, such as bicycles.Sami Auvinen/iStock via Getty Images Plus

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.

What is rust? – Henry E., age 13, Boston, Massachusetts

Imagine leaving your...

Read more: What is rust? A materials scientist explains metal’s crusty enemy

Inside the search for sustainable aviation fuels, which are on the federal chopping block

  • Written by Li Qiao, Professor of Aeronautics and Astronautics, Purdue University
imageResearchers are working to make aviation fuel more environmentally friendly.Tsvetomir Hristov/Moment via Getty Images

The federal spending law passed in early July 2025, often called the One Big Beautiful Bill Act, significantly reduces federal funding for efforts to create renewable or sustainable types of fuel that can power aircraft over long...

Read more: Inside the search for sustainable aviation fuels, which are on the federal chopping block

For Syrian Druze, latest violence is one more chapter in a centuries-long struggle over autonomy

  • Written by Rami Zeedan, Associate Professor, University of Kansas
imageAn elderly Druze man stands near Syria's new flag and the multicolored Druze flag in Al Karama Square in the city of Sweida on March 4, 2025.AP Photo/Omar Sanadiki

Fighting has flared on and off in southern Syria for nearly a month, despite a fragile ceasefire. Violence in July 2025 left more than 1,600 people dead, according to the Syrian...

Read more: For Syrian Druze, latest violence is one more chapter in a centuries-long struggle over autonomy

Schools are looking for chaplains, but the understanding of who – and what – chaplains are varies widely

  • Written by Wendy Cadge, Professor of Sociology and President, Bryn Mawr College
imageNavy Chaplain Judy Malana sings during the funeral service for former first lady Rosalynn Carter on Nov. 29, 2023, in Plains, Ga.Photo by Alex Brandon - Pool/Getty Images

There is an ongoing push to make chaplains available in public schools across the United States. Chaplains, also called spiritual caregivers, are religious professionals who work...

Read more: Schools are looking for chaplains, but the understanding of who – and what – chaplains are varies...

Trump administration cuts to terrorism prevention departments could leave Americans exposed

  • Written by Kris Inman, Professor of African Studies and Security Studies, Georgetown University
imageGhanaian special forces take part in U.S. military-led counterterrorism training near Jacqueville, Ivory Coast, on Feb. 16, 2022. AP Photo/Sylvain Cherkaoui

Staff at the State Department’s Office of Countering Violent Extremism and Bureau of Conflict and Stabilization Operations, which led U.S. anti-violent extremism efforts, were laid off,...

Read more: Trump administration cuts to terrorism prevention departments could leave Americans exposed

3 reasons Republicans’ redistricting power grab might backfire

  • Written by Charlie Hunt, Associate Professor of Political Science, Boise State University
imageTexas state lawmakers board a bus following a press conference at the DuPage County Democratic Party headquarters in Carol Stream, Ill., on Aug. 3, 2025. Scott Olson/Getty Images

The gerrymandering drama in Texas – and beyond – has continued to unfold after Democratic state legislators fled the state. The Democrats want to prevent the...

Read more: 3 reasons Republicans’ redistricting power grab might backfire

Bureau of Labor Statistics tells the US what’s up with the economy – Trump firing its top official may undercut trust in its data

  • Written by Thomas A. Stapleford, Associate Professor of History and Liberal Studies, University of Notre Dame
imageIsador Lubin, chief of the Bureau of Labor Statistics, presents data to a Senate committee in 1937.Library of Congress

Many financial and political analysts are trying to assess the impact of President Donald Trump’s decision to fire U.S. Bureau of Labor Statistics Commissioner Erika McEntarfer on Aug. 1, 2025, the same day that an...

Read more: Bureau of Labor Statistics tells the US what’s up with the economy – Trump firing its top official...

Authoritarian rulers aren’t new – here’s what Herodotus, an early Greek historian, wrote about them

  • Written by Debbie Felton, Professor of Classics, UMass Amherst
imageDarius I of Persia, center, and his court, from a vase painted between 340 and 320 B.C.E., on display at the National Archaeological Museum in Naples.Carlo Raso/ Flickr, CC BY-SA

“No Kings” rallies. “Good Trouble” protests. “Rage against the Regime” uprisings. These events in the first seven months of President...

Read more: Authoritarian rulers aren’t new – here’s what Herodotus, an early Greek historian, wrote about them

Industrial pollution once ravaged the Adirondacks − decades of history captured in lake mud track their slow recovery

  • Written by Sky Hooler, Ph.D. Student in Environmental Science, University at Albany, State University of New York
imageScientist Aubrey Hillman, one of the authors of this article, extracts a core of mud from the bottom of Black Pond in June 2025. Patrick Dodson/University at Albany

Lush forests and crisp mountain air have drawn people to New York’s Adirondack Mountains for centuries. In the late 1800s, these forests were a haven for tuberculosis patients seek...

Read more: Industrial pollution once ravaged the Adirondacks − decades of history captured in lake mud track...

More Articles ...

  1. AI is taking hold in K-12 schools – here are some ways it can improve teaching
  2. NASA plans to build a nuclear reactor on the Moon – a space lawyer explains why, and what the law has to say
  3. Elon Musk’s plans for a new political party will likely be derailed by a US political system hostile to new voices
  4. Hulk Hogan and the unraveling of worker solidarity
  5. Gaza isn’t the first time US officials have downplayed atrocities by American-backed regimes – genocide scholars found similar strategies used from East Timor to Guatemala to Yemen
  6. Vaccines hold tantalizing promise in the fight against dementia
  7. Teen drivers face unique challenges during ‘100 deadliest days’ of summer, but safety measures can make a difference
  8. As the Colorado River slowly dries up, states angle for influence over future water rights
  9. ‘KPop Demon Hunters’ is attracting huge audiences worldwide – young Philadelphians told us K-pop culture inspires innocence, joy and belonging
  10. Understanding key terms swirling around Alligator Alcatraz and immigration enforcement in the US
  11. Transgender, nonbinary and disabled people more likely to view AI negatively, study shows
  12. A toxicologist’s guide to poison ivy’s itch and bee stings’ burning pain – 2 examples of nature’s chemical warfare
  13. Wildfire season is starting weeks earlier in California – a new study shows how climate change is driving the expansion
  14. Trump has promised to eliminate funding to schools that don’t nix DEI work – but half of the states are not complying
  15. How states are placing guardrails around AI in the absence of strong federal regulation
  16. History shows why FEMA is essential in disasters, and how losing independent agency status hurt its ability to function
  17. Iron nanoparticles can help treat contaminated water – our team of scientists created them out of expired supplements
  18. Youth athletes, not just professionals, may face mental health risks from repeated traumatic brain injuries
  19. Insurance warning signs in doctors’ offices might discourage patients from speaking openly about their health
  20. Where next for Khamenei? After war, Iran’s supreme leader is faced with difficult choices
  21. Philadelphia is using AI-driven cameras to keep bus lanes clear – transparency can help build trust in the system
  22. The Druze are a tightly knit community – and the violence in Syria is triggering fears in Lebanon
  23. EPA removal of vehicle emissions limits won’t stop the shift to electric vehicles, but will make it harder, slower and more expensive
  24. A red meat allergy from tick bites is spreading – and the lone star tick isn’t the only alpha-gal carrier to worry about
  25. Why leisure matters for a good life, according to Aristotle
  26. When it comes to finance, ‘normal’ data is actually pretty weird
  27. Football and faith could return to the Supreme Court – this time, over loudspeakers
  28. Survivors’ voices 80 years after Hiroshima and Nagasaki sound a warning and a call to action
  29. National parks are key conservation areas for wildlife and natural resources
  30. The case that saved the press – and why Trump wants it gone
  31. For America’s 35M small businesses, tariff uncertainty hits especially hard
  32. Meet ‘lite intermediate black holes,’ the supermassive black hole’s smaller, much more mysterious cousin
  33. 2 spacecraft flew exactly in line to imitate a solar eclipse, capture a stunning image and test new tech
  34. If everyone in the world turned on the lights at the same time, what would happen?
  35. Fetal autopsies could help prevent stillbirths, but too often they are used to blame mothers for pregnancy loss
  36. Fixing Michigan’s teacher shortage isn’t just about getting more recruits
  37. PBS accounts for nearly half of first graders’ most frequently watched educational TV and video programs
  38. Beyond brute strength: A fresh look at Samson’s search for intimacy in the Hebrew Bible
  39. Plantation tourism, memory and the uneasy economics of heritage in the American South
  40. The treaty meant to control nuclear risks is under strain 80 years after the US bombings of Hiroshima and Nagasaki
  41. The World Court just ruled countries can be held liable for climate change damage – what does that mean for the US?
  42. From printing presses to Facebook feeds: What yesterday’s witch hunts have in common with today’s misinformation crisis
  43. Historian uncovers evidence of second mass grave of Irish immigrant railroaders in Pennsylvania who suffered from cholera, violence and xenophobia
  44. Quantum scheme protects videos from prying eyes and tampering
  45. Shingles vaccination rates rose during the COVID-19 pandemic, but major gaps remain for underserved groups
  46. As wrestling fans reel from the sudden death of Hulk Hogan, a cardiologist explains how to live long and healthy − and avoid chronic disease
  47. Are you really allergic to penicillin? A pharmacist explains why there’s a good chance you’re not − and how you can find out for sure
  48. How FDA panelists casting doubt on antidepressant use during pregnancy could lead to devastating outcomes for mothers
  49. Yosemite embodies the long war over US national park privatization
  50. What is personalized pricing, and how do I avoid it?