A rooftop is covered with solar panels at the Brooklyn Navy Yard in New York last February. The Trump administration is considering whether to impose tariffs on imports of solar materials.
Microorganisms play a vital role in growing food and sustaining the planet, but they do it anonymously. Scientists haven't identified most soil microbes, but they are learning which are most common.
In one study, participants who routinely got less than seven hours of sleep were coached to extend their sleep time. They also changed their diets, without being asked — taking in less sugar each day.
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Yellows, oranges and reds show regions where the average temperature from 2013 to 2017 was higher than a baseline average from 1951 to 1980, according to an analysis by NASA's Goddard Institute for Space Studies.
NASA's Scientific Visualization Studio
Aaron Hernandez (81), of the New England Patriots, lost his helmet during this play against the New York Jets in 2011. Hernandez killed himself in 2017, and researchers found that he had had one of the most severe cases of CTE ever seen in someone his age.
Robert Murray of Murray Energy (right) meets with Energy Secretary Rick Perry at the Department of Energy headquarters in Washington in a March 29, 2017, photo obtained by The Associated Press.
Dr. Mathilde Krim at the World AIDS Day Symposium presented by the Foundation For AIDS Research and the Columbia University Mailman School of Public Health in 2002. Krim had a knack for helping people talk about HIV/AIDS rationally, colleagues say.
A grande Cafe Nero, large Costa Coffee and venti-sized Starbucks to-go cups sold in London. The U.K. Parliament is considering a tax on disposable cups in an effort to cut down on waste.
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