Nonsmokers who were exposed to secondhand smoke as children were 30 percent more likely to die of chronic obstructive pulmonary disease.
The spread of toxic algae has killed a whale shark and countless fish, threatening to upturn Florida's vital summer tourist season.
If it's been more than a decade since you were diagnosed with a penicillin allergy, you might want to get retested.
People send dating app messages to potential mates who are 25 percent more desirable than they are.
Scientists cannot be certain about the exact cause of the whale shark's death, but the deadly toxin was present in its tissue. The timing and location also implicate the harmful algal bloom, or “red tide,” as the most likely cause.
Sediment under a lake in Mexico quantifies for the first time the intensity of the drought that contributed to the Mayan civilization's collapse.
"There is not much of the ocean remains as it once was.”
A border wall threatens plant and animal species and scientific research, a new report says.
Two equally matched asteroids are circling each other as they circle the sun.
Crowds lined Constitution Avenue, filled the Mall and visited George Washington’s home to honor U.S. independence.