A survey of the southeastern United States shows that nearly half of mobile home residents don’t know where to shelter during a tornado, and many aren’t getting the resources they need to survive one.

Crustaceans in the Mariana Trench and other underwater canyons feed on food from the surface laced with carbon-14 from Cold War bomb tests

Clues hidden in today’s orbits hint at the violent origins of the solar system — and a rogue giant kicked out long ago.