The shimmering dunes of White Sands National Park harbor an extraordinary secret: fossilized human footprints that suggest human presence in the Americas as much as 10,000 years earlier than ...

Locked within the stones and fossils of Petrified Forest National Park lies a record of life, death, and resilience during one of Earth's most extreme periods of environmental change. What secrets do ...

Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...