Virginia-class nuclear-powered submarine, the USS Idaho, has reached another major milestone toward joining the U.S. Navy ...

The puzzle seems impossible: take a three-billion-letter code and predict what happens if you swap a single letter. The code we’re talking about—the human genome—stores most of its instructions in ...

Tropical Storm Wilfred formed in the eastern Atlantic Ocean Friday morning, using the last of the traditional names selected for tropical systems this hurricane season. "Get out the Greek alphabet," ...