Archaeologists investigate the dramatic origins of democracy in ancient Greece 2,500 years ago.

A deadly—and growing—global weather phenomenon mystifies scientists.

Follow the Artemis mission to bring humanity back to the Moon for the first time since Apollo.

Five ecosystems transformed by climate change give birth to new, sometimes even richer worlds.

At Reteti Sanctuary, the team helps orphan elephants prepare for life in the wild.

Four people across continents face environmental change and seek coexistence with wildlife.

See the extreme ways in which raptors conquer the toughest habitats on Earth.

Before the Pause explores solutions for women experiencing perimenopause.

Mars was once a blue water world studded with active volcanoes. But when its magnetic field and protective atmosphere faded, it became the frozen desert planet we know today. With so many necessary elements in place, did life ever form on Mars?

Colossal explosions shake a remote corner of the Siberian tundra, leaving behind massive craters