Acting IRS commissioner resigning after agency reaches datasharing deal with immigration authorities CNN

NASA has arrived at two ways of returning samples collected on Mars to Earth. Now, the agency will test the options to see if the cache can make it back…

A deadly strain of bird flu sweeping through remote islands near Antarctica has devastated the native wildlife population, killing an estimated 13,000 seal pups, as well as penguins and seabirds,…

Extreme emotional stress can cause a medical condition called broken heart syndrome. For decades, doctors thought it should mainly concern women — but that’s changing.