Like the periodic table, the geological timescale brings order to Earth’s deep history, measuring millions of years of time recorded in the rocks beneath our planet’s cities and towns, mountains and ...

These national parks are better in the winter, with swarm temps and surprisingly vibrant ecosystems that thrive during this season.

Need an idea for a family vacation? Here are five destinations that fit the bill, whether you’re looking for culture, adventure or a great beach.

A Martian volcano once thought to be the result of a single eruption turns out to have a much more complex past. Orbital imaging and mineral data show it developed through multiple eruptive phases, ...

A new paper in Monthly Notices of the Royal Astronomical Society argues the simplest answer may work: contact binaries like ...

Every winter Yosemite National Park becomes the stage for one of nature’s most riveting optical illusions: a magnificent waterfall that for a brief moment appears to be made of pure golden fire.

An 11-year-old rock hunter has uncovered an almost complete turtle shell dating to roughly 48 million years ago. That intact shell secured a rare glimpse into a vanished river world before weather ...