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Like many reptiles, the sex of a turtle is determined by how warm the egg is as it's being incubated. And small temperature differences can cause dramatic changes in the male-to-female ratio.

Most people seem to have heeded the warning not to look at August's total eclipse without eye protection. But an unlucky few suffered serious injury, and doctors could see changes at a cellular level.

These interactive charts, says a World Bank data scientist, paint a "pretty good" picture of the world.

Insurance companies are increasingly dropping homeowners in California because of wildfire risk. There's concern the problem will grow worse after this year's destructive fire season.

President Trump's chief economic adviser Gary Cohn is leaving the White House. Cohn has fought against President Trump imposing tariffs on steel and aluminum imports, a battle he appears to have lost.

Carter was one of the last of the Tuskegee Airmen, the famous unit that overcame both internal challenges and enemy fire to serve in World War II.

President Trump visits San Diego, California, on Tuesday to promote the prototypes of the border wall he plans to build. The region already has several miles of border fencing.

NPR's Michele Kelemen, who covers the State Department, talks to Rachel Martin about events leading up to the announcement.

The White House says President Trump has agreed to meet North Korea's Kim Jong Un.

The effort involves tech leaders such as Alibaba, Baidu, eBay, Facebook and Instagram who have pledged to try to reduce trafficking across their platforms by 80 percent by 2020.