An Incredible Discovery

Ancient ocean found beneath Chesapeake Bay: The remains of a salty ocean ancient enough for dinosaurs to have drowned in it have been found deep in the sediment under the Chesapeake Bay. The seawater — believed to be 100 to 150 million years old — was isolated, trapped a half-mile underground, and preserved with the help of an asteroid. The find suggests that the oceans of yore were twice as salty as today's.