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Ancient Mars may have had a carbon cycle − a new study suggests the red planet may have once been warmer, wetter and more favorable for life

  • Written by Elisabeth M. Hausrath, Professor of Geoscience, University of Nevada, Las Vegas
imageA panorama created from images taken by the rover Curiosity while it was working at a site called 'Rocknest' in 2012.NASA/JPL-Caltech/Malin Space Science Systems

Mars, one of our closest planetary neighbors, has fascinated people for hundreds of years, partly because it is so similar to Earth. It is about the same size, contains similar rocks and...

Read more: Ancient Mars may have had a carbon cycle − a new study suggests the red planet may have once been...

Running with a stroller: 2 biomechanics researchers on how it affects your form − and risk of injury

  • Written by Allison Altman Singles, Associate Professor of Kinesiology and Mechanical Engineering, Penn State
imageRunning with a stroller can alter running form, but a few simple tricks can reduce chronic injury risk.iStock via Getty Images Plus

“Faster, mommy, faster!” Allison’s toddler squealed as she ran down the hill by her house with her jogging stroller. As a longtime runner and running biomechanics researcher, she found herself in the...

Read more: Running with a stroller: 2 biomechanics researchers on how it affects your form − and risk of injury

Pope Francis encouraged Christian-Muslim dialogue and helped break down stereotypes

  • Written by Craig Considine, Senior Lecturer in Sociology, Rice University
imageTributes being paid to Pope Francis at the Sacred Heart Cathedral Church in Lahore, Pakistan, on April 22, 2025.AP Photo/K.M. Chaudary

Pope Francis’ pontificate marked a distinct shift in the Catholic Church’s engagement with the Muslim world. While his predecessors fostered dialogue and tolerance, Francis sought more active engagement...

Read more: Pope Francis encouraged Christian-Muslim dialogue and helped break down stereotypes

Worsening allergies aren’t your imagination − windy days create the perfect pollen storm

  • Written by Christine Cairns Fortuin, Assistant Professor of Forestry, Mississippi State University
imageWindy days can mean more pollen and more sneezing.mladenbalinovac/E+ via Getty Images

Evolution has fostered many reproductive strategies across the spectrum of life. From dandelions to giraffes, nature finds a way.

One of those ways creates quite a bit of suffering for humans: pollen, the infamous male gametophyte of the plant kingdom.

In the...

Read more: Worsening allergies aren’t your imagination − windy days create the perfect pollen storm

National security advisers manage decision-making as advocates or honest brokers

  • Written by Gregory F. Treverton, Professor of Practice in International Relations, USC Dornsife College of Letters, Arts and Sciences
imageMike Waltz speaks with reporters in the press room at the White House on Feb. 20, 2025.AP Photo/Alex Brandon

The removal of Mike Waltz as President Donald Trump’s national security adviser – formally the assistant to the president for national security affairs – raises the question of just what that position entails and also what...

Read more: National security advisers manage decision-making as advocates or honest brokers

A pope of the Americas: What Francis meant to 2 continents

  • Written by Neomi De Anda, Associate Professor of Religious Studies, University of Dayton
imageA portrait of Pope Francis is projected onto a water fountain in Lima, Peru, on April 21, 2025.AP Photo/Martin Mejia

Most stories about Pope Francis mention that he made history as the first pontiff from Latin America. In fact, Francis was the first pope in centuries to be born outside Europe. But what impact did that actually have on the Catholic...

Read more: A pope of the Americas: What Francis meant to 2 continents

In Yemen, Trump risks falling into an ‘airpower trap’ that has drawn past US presidents into costly wars

  • Written by Charles Walldorf, Professor of Politics and International Affairs, Wake Forest University
imageA Yemeni soldier inspects the damage reportedly caused by U.S. airstrikes in Sanaa, Yemen, on April 27, 2025.AP Photo/Osamah Abdulrahman

In the first 100 days of his second term, U.S. President Donald Trump has shown a willingness to lean on airpower when his administration decides that military force is necessary abroad.

So far, the second Trump...

Read more: In Yemen, Trump risks falling into an ‘airpower trap’ that has drawn past US presidents into...

Teachers and librarians are among those least likely to die by suicide − public health researchers offer insights on what this means for other professions

  • Written by Jordan Batchelor, Research Analyst at the Center for Violence Prevention and Community Safety, Arizona State University
imageOne reason teachers have a low suicide rate may be that they find meaning in their jobs.Digital Vision/Getty Images

Where you work affects your risk of dying by suicide. For example, loggers, musicians and workers in the oil and gas industries have much higher rates of suicide than the rest of the population.

But on the flip side, some professions...

Read more: Teachers and librarians are among those least likely to die by suicide − public health researchers...

Hurricane forecasts are more accurate than ever – NOAA funding cuts could change that, with a busy storm season coming

  • Written by Chris Vagasky, Meteorologist and Research Program Manager, University of Wisconsin-Madison
imageRadar shows a NOAA Hurricane Hunter flying through Tropical Storm Idalia during a mission in 2023.Nick Underwood/NOAA

The National Hurricane Center’s forecasts in 2024 were its most accurate on record, from its one-day forecasts, as tropical cyclones neared the coast, to its forecasts five days into the future, when storms were only beginning...

Read more: Hurricane forecasts are more accurate than ever – NOAA funding cuts could change that, with a busy...

How was the Earth built?

  • Written by Alexander E. Gates, Professor of Earth and Environmental Science, Rutgers University - Newark
imageThe Earth formed in a ring of debris around the Sun, like the one around Vega, a bright star, in this artist's conception.NASA/JPL-Caltech

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.

How was the Earth built? – Noah, age 5, Florida

It...

Read more: How was the Earth built?

More Articles ...

  1. Philly’s forgotten history as a hub of anarchism with a thriving radical Yiddish press
  2. Kilmar Abrego Garcia’s wrongful deportation case is more about individual rights than the Trump administration’s foreign policy
  3. What is the biggest gaffe, blooper or blunder that a recent president has made? It may depend on what your definition of ‘is’ is
  4. The Women’s Health Initiative has shaped women’s health for over 30 years, but its future is uncertain
  5. Trump and many GOP lawmakers want to end all funding for NPR and PBS − unraveling a US public media system that took a century to build
  6. How millions of people can watch the same video at the same time – a computer scientist explains the technology behind streaming
  7. A Michigan research professor explains how NIH funding works − and what it means to suddenly lose a grant
  8. A law seeks to protect children from sex offenders − 20 years later, the jury is still out
  9. When presidents try to make peace: What Trump could learn from Teddy Roosevelt, Carter, Clinton and his own first term
  10. Children in military families face unique psychological challenges, and the barriers to getting help add to the strain
  11. Despite Supreme Court setback, children’s lawsuits against climate change continue
  12. Whether GDP swings up or down, there are limits to what it says about the economy and your place in it
  13. Some ‘Star Wars’ stories have already become reality
  14. Fleeting fireflies illuminate Colorado summer nights − and researchers are watching
  15. What makes people flourish? A new survey of more than 200,000 people across 22 countries looks for global patterns and local differences
  16. Deporting international students risks making the US a less attractive destination, putting its economic engine at risk
  17. As heated tobacco products reenter the US market, evidence on their safety remains sparse – new study
  18. What causes RFK Jr.’s strained and shaky voice? A neurologist explains this little-known disorder
  19. Is a faith-based charter school a threat to religious freedom, or a necessity to uphold it? The weighty decision lies with the Supreme Court
  20. Guns in America: A liberal gun-owning sociologist offers 5 observations to understand America’s culture of firearms
  21. Terrorists weigh risks to their reputation when deciding which crises to exploit − new research
  22. The woman who turned the Met Gala into the biggest party of the year
  23. Pandas and politics − from World War II to the Cold War, zoos have always been ideological
  24. The legal limits of Trump’s crackdown on sanctuary cities like Philadelphia
  25. Trump seeks to reshape how schools discipline students
  26. In the $250B influencer industry, being a hater can be the only way to rein in bad behavior
  27. From the Chinese Exclusion Act to pro-Palestinian activists: The evolution of politically motivated deportations
  28. AI is giving a boost to efforts to monitor health via radar
  29. Forensics tool ‘reanimates’ the ‘brains’ of AIs that fail in order to understand what went wrong
  30. What is a downburst? These winds can be as destructive as tornadoes − we recreate them to test building designs
  31. How rising wages for construction workers are shifting the foundations of the housing market
  32. Bees, fish and plants show how climate change’s accelerating pace is disrupting nature in 2 key ways
  33. How a reading group helped young German students defy the Nazis and find their faith
  34. ‘Agreeing to disagree’ is hurting your relationships – here’s what to do instead
  35. Young bats learn to be discriminating when listening for their next meal
  36. RFK Jr. said many autistic people will never write a poem − even though there’s a rich history of neurodivergent poets and writers
  37. Whooping cough is making a comeback, but the vaccine provides powerful protection
  38. No whistleblower is an island – why networks of allies are key to exposing corruption
  39. From cats and dogs to penguins and llamas, treating animals with acupuncture has become mainstream in veterinary medicine
  40. The ‘sacramental shame’ many LGBTQ+ conservative Christians wrestle with – and how they find healing
  41. Almost Zion: Remembering a short-lived Jewish state in New York
  42. Spider-Man’s lessons for us all on the responsibility to use our power, great or small, to do good
  43. Disinformation and other forms of ‘sharp power’ now sit alongside the ‘hard power’ of tanks and ‘soft power’ of ideas in policy handbook
  44. Florida panthers and black bears need a literal path for survival – here’s how the Florida Wildlife Corridor provides it in one of the fastest-growing US states
  45. How Trump promotes a radical, unscientific theory about sex and gender in the name of opposing ‘gender ideology extremism’
  46. Trump’s first 100 days show him dictating the terms of press coverage − following Hungarian strongman Viktor Orbán’s playbook for media control
  47. 50 years later, Vietnam’s environment still bears the scars of war – and signals a dark future for Gaza and Ukraine
  48. Trump administration’s attempt to nix the labor rights of thousands of federal workers on ‘national security’ grounds furthers the GOP’s long-held anti-union agenda
  49. Bureaucrats get a bad rap, but they deserve more credit − a sociologist of work explains why
  50. Italy’s Meloni is positioning herself as bridge between EU and Trump – but will it work?