A geologist explains the basics about these elements, which are crucial for modern electronics.
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Red tide and a blue-green algae outbreak are fouling hundreds of miles of coast, killing fish and driving tourists away from beaches. Some of the causes are natural, but human actions play a big role.
Wildland firefighting has always been a risky job, but development in fire-prone areas is making it more dangerous by putting forest firefighters in situations they are not equipped or trained for.
The NRA may fund political candidates but only with cash from U.S. donors. The group could face serious consequences if, as news reports allege, it broke laws and rules.
The Trump administration recently announced it will reverse several policy memos outlining how colleges and universities can use race as a factor in admissions. Will diversity on campus take a hit?
The Donald J. Trump Foundation allegedly violated charitable norms and laws.
An economist answers four important questions on what’s behind the political turmoil in Italy and what’s at stake for Europe and the world.
According to one study, more than 8 million people per year die early from air pollution exposure.
Who do you call when there’s a nuclear crisis? The International Atomic Energy Agency, unless the crisis involves North Korea – then things get complicated.
Earth’s ozone layer shields us from harmful ultraviolet radiation. Nations have been working to reduce ozone-depleting chemicals since the 1980s, but recent studies show that there is still work to do.
Some communities are seeking to secede from larger school districts to form their own school districts in the name of ‘local control.’ But court rulings find race is often at play.
Air pollution could be the next battleground between California and the Trump administration, which is reviewing the Golden State’s special legal authority to regulate tailpipe emissions.
In the wake of a self-driving Uber car killing a pedestrian in Arizona, an ethicist examines the state of autonomous vehicle development.
Were foreign diplomats and tourists attacked with a ‘sonic weapon’ – or was it something else? Ultrasound researchers demonstrate a rational, evidence-based explanation.
Research is the foundation for evidence-based policies. But because of funding prohibitions, there’s little US research to inform the contentious debate around gun violence and gun control.
There’s a norovirus outbreak at the Winter Olympics. Here’s what that means – and why it’s so hard to stop.
A recent study found the largest cluster of advanced black lung disease ever recorded among coal miners in central Appalachia. Two doctors who treat black lung patients explain how miners contract it.
The lost incentives to give are likely to make a bigger difference than the small uptick in economic growth expected from the new law.
What’s at stake as the Trump administration imposes trade sanctions on imported solar panels? A look at the US solar energy industry, which generates more than twice as many jobs as coal energy.
After Australia’s tough flu season, some experts predict that the U.S. is in for a few difficult months. What does that mean for you?
Top contributors
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Glenn Family Chair Emeritus of Economics and Philanthropic Studies, Indiana University
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Professor Emeritus of Risk Management and Insurance, Georgia State University
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Part-Time Professor of Economics, The New School
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Professor of Environmental Health Sciences, UMass Amherst
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Assistant Professor of Law and Director of the Medical-Legal Partnership Clinic, University of Memphis
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Assistant Professor of Sociology, The University of Texas at San Antonio
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Associate Professor of Biology, Rochester Institute of Technology
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Professor of Atmospheric Science, Colorado State University
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Research Scientist, The University of Texas at Austin
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Affiliate Researcher, Religion and Civic Culture Center, USC Dornsife College of Letters, Arts and Sciences; Bayreuth University
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Associate Professor of Criminal Justice, Penn State
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Professor of Law, St. Mary's University
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Director of Energy Studies, University of Florida
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Professor of Journalism and Sociology, Columbia University
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Professor of Meteorology, Senior Associate Dean for Undergraduate Education, Penn State