NPR's Ailsa Chang talks with Phil Hartmeyer, is a marine archaeologist at NOAA's Ocean Exploration program, about a mural discovered in the shipwreck of the USS Yorktown, which sunk during WWII.

China unveils the Blue Whale, the world’s first high-speed submersible drone capable of operating autonomously in extreme ...

Learn the right way to add water to your Watchdog backup sump pump battery and keep your system running smoothly.