Until Tuesday, the tree's tumble hadn't been shown publicly, but discovery of the fallen tree reverberated across the United ...

From ancient metropolises to today’s sprawling megacities, witness the breathtaking rise, reign, and fall of the world’s largest urban giants — and glimpse the future of civilization.

Scientists reveal new details about the 5.3-million-year-old flood, which triggered earthquakes, generated tropical-storm ...

It was a momentous occasion in the village of Hoosick Falls. More than a decade after per- and polyfluoroalkyl substances were discovered in the small community’s drinking water, two new wells, a pump ...