New clues from the day the dinosaurs died. A mysterious ancient human tooth. Primordial galaxies. See how the past year ...

On November 24-25, some 47 heads of state and government are due to gather in Angola’s capital Luanda for the seventh African ...

Just look how many countries are vying for Angola's attention. The capital Luanda is bustling with international delegations ...

The EPA proposes to narrow the scope of a key part of the Clean Water Act – a change criticized by environmental groups but ...

Discover hidden spots in Florida’s Everglades that most tourists miss—quiet trails, secret boardwalks, and unforgettable ...

Saguaro Park in southeastern Arizona, near Tucson, offers a landscape unlike anything you’ll see elsewhere. The park hosts ...