Hurricane Polo has been churning off the coast of Mexico. But forecasters say it will come ashore early next week, with remnants spreading into the U.S.
Scientists studying the tiger cat have found 5 distinct species, revealing more diversity among these familiar-looking wild cats than previously known.
A high school teacher discovered 4 footprints that make up the 1st-ever known T. rex trackway. He discovered it at Hell Creek Formation in North Dakota.
Researchers have found evidence in a sediment core in Antarctica that wildfires near the South Pole were a regular occurrence some 90 million years ago.
Crepuscular rays form around twilight when particles in the atmosphere reflect the sun's light beams toward our eyes. See photos of the phenomenon here.