A rare pamphlet about Christopher Columbus’s first voyage is on sale at Christie’s, which said it had taken pains to ensure this one wasn’t forged or stolen.
Each September, the ice at the top of the world hits its lowest extent of the year. Researchers are studying how a warming climate is affecting a not-so-frozen ocean.
The vast multinational search for the missing submersible ended after pieces of it were found on the ocean floor, 1,600 feet from the bow of the Titanic.