Christopher JoyceChristopher Joyce is a correspondent on the science desk at NPR. His stories can be heard on all of NPR's news programs, including NPR's Morning Edition, All Things Considered, and Weekend Edition.
Smog blankets Santiago, Chile, in June. A U.N. report warns that even a 1.5-degree C increase in global temperatures will cause serious changes to weather, sea levels, agriculture and natural eco-systems.
Cllaudio Reyes/AFP/Getty Images
Kenya Wildlife Service (KWS) rangers display ivory seized from poachers around the country. KWS has played a critical role in carrying out operations against poachers.
Simon Maina/Getty Images
As the climate warms, drought is killing large numbers of trees in California. Scientists are looking to the past to try to understand how the ecosystems of today may be changing.
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Mario Ramos (left) and wife Tally adjust their umbrellas in Laguna Beach, Calif. The state was among a number of places this summer that experienced their highest temperatures on record.
Jae C. Hong/AP
Waste engineer Jenna Jambeck of the University of Georgia surveys plastic waste in a southeast Asian village, where it will be recycled to make raw material for more plastic products. Jambeck advises Asian governments on how to keep plastic trash out of waterways.
Courtesy of Amy Brooks
Karin Bruwelheide handles an amputates limb that dates back to the Civil War. The bones were discovered by scientists at Manassas National Battlefield Park in Virginia. Scientists at the Smithsonian Institution's National Museum of Natural History have been analyzing the bones to learn more about them and who they may have belonged to.
The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission, shown in an artist's rendering, will measure tiny fluctuations in Earth's gravitational field to show how water moves around the planet.
An infrared satellite image shows Hurricane Harvey just prior to making landfall on Aug. 25, 2017. Warm water in the Gulf of Mexico fed heavy rains, according to new research.