A pump jack at work in 2016, near Firestone, Colo. The American Exploration & Production Council, which represents oil and gas exploration firms, is one of many industry groups supporting the HONEST Act, which was passed by the House and is now with the Senate. David Zalubowski/AP hide caption

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David Zalubowski/AP

GOP Effort To Make Environmental Science 'Transparent' Worries Scientists

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Glioblastomas are the most common malignant brain tumor. About 12,000 people in the U.S. are diagnosed with the cancer every year. Sherbrooke Connectivity Imaging Lab/Science Source hide caption

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Sherbrooke Connectivity Imaging Lab/Science Source

John McCain Was Diagnosed With A Glioblastoma, Among The Deadliest Of Cancers

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Northern elephant seals recognize each other's voices based on rhythm and pitch. Nicolas Mathevon/Current Biology hide caption

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Nicolas Mathevon/Current Biology

Threat call of a northern elephant seal

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The morphine-like pain killer Oxycontin is just one of a number of opioids fueling a substance use crisis in the U.S. federal health officials say. And successful treatment for the substance use disorder can be costly. Leonard Lessin/Getty Images/Science Source hide caption

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Leonard Lessin/Getty Images/Science Source

Arctic sea ice is seen from a NASA research aircraft on March 30, 2017, above Greenland. A top Interior Department scientist who tracks Arctic conditions says he was demoted by the Trump administration for speaking out on climate change. Mario Tama/Getty Images hide caption

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Mario Tama/Getty Images

Climate Scientist Says He Was Demoted For Speaking Out On Climate Change

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Piles of plastic waste are pictured on the seaside in the coastal town of Khalde, south of the Lebanese capital Beirut, on September 22, 2016. Joseph Eid/AFP/Getty Images hide caption

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Joseph Eid/AFP/Getty Images

Plastic Is Everywhere And Recycling Isn't The End Of It

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Researchers Examine When People Are More Susceptible To Fake News

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Students Compete In First-Ever International High School Robotics Competition

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An African cheetah (acinonyx jubatus lanea) at Inverdoorn Game Reservein South Africa. Thierry Falise/LightRocket via Getty Images hide caption

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Thierry Falise/LightRocket via Getty Images

New Research Suggests Why Mid-Sized Animals Are The Fastest

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Two-year-old Robbie Klein has hemophilia, a medical condition that interferes with his blood's ability to clot normally. Without insurance, the daily medications he needs to stay healthy could cost hundreds of thousands of dollars or more each year. Jesse Costa/WBUR hide caption

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Jesse Costa/WBUR

In Massachusetts, Proposed Medicaid Cuts Put Kids' Health Care At Risk

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An image of Penicillium colonies. The white colony is a mutant similar to the mold found in Camembert cheese. The green ones are the wild form. Courtesy of Benjamin Wolfe hide caption

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Courtesy of Benjamin Wolfe

Tesla and SpaceX CEO Elon Musk responds to a question by Nevada Republican Gov. Brian Sandoval during the third day of the National Governors Association's meeting on Saturday in Providence, R.I. Among other things, Musk warned governors that artificial intelligence poses a "fundamental risk to the existence of human civilization." Stephan Savoia/AP hide caption

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Stephan Savoia/AP