Half a mile under Chesapeake Bay is the oldest sizable body of seawater to be identified worldwide. This ancient sea is thought to be 100-145 million years old.
Nearly 120 million people in the U.S, could be affected by severe weather today. Strong tornadoes, damaging winds over 70 mph, and large hail are possible.
Experts are watching an enormous iceberg that is separating from the Antarctica continent. Roughly the size of Manhattan, the iceberg could threaten shipping lanes.
Updated with new observations every 12 hours, the computer model predicts critical details such as the extent of the blaze and changes in its behavior.