Two enormous asteroids that struck Earth about 36 million years ago did not cause any long-lasting shifts to our planet's climate, according to new research.
The space rocks, both estimated to be no larger than 5 miles (8 kilometers) wide, impacted Earth within 25,000 years of each other. Geologically speaking, that's a relatively short period of time, offering scientists a unique opportunity to study how our planet's climate responded to such an onslaught.
