Discover 5 kid-friendly historical sites in Chicago with tips on hours, costs, and accessibility for family visits.

The newly-discovered penguin species went extinct when the ice age hit, but researchers don't think the cold was to blame for their demise.

Humans are gambling on the very stability of Earth's life support systems, scientists said Wednesday, warning that ocean ...

The latest Planetary Health Check report says ocean acidification has reached risky territory. Experts say it will reduce our ...