A 2017 satellite photo shows the stark contrast along the boundary between a giant field of golden "star dunes" and a barren ...

Earth was not always the blue-green world we know today: early Earth's oxygen levels were about a million times lower than we ...

Ancient hot springs in Japan reveal how microbes adapted to Earth’s first oxygen, offering insights into early life.

"Are we alone?" This ancient question has occupied humanity's mind for a long time. In 1995, the discovery of the first exoplanet orbiting a sun-like star opened the door to exploring this profound ...

Chemical fossils from 635-million-year-old rocks suggest sponges were among Earth’s first animals, reshaping the story of early life.

Microbes - alive and thriving -- have been found sealed within a fracture of 2-billion-year-old rock beneath Earth's surface.

In a remote desert, scientists have discovered one of Earth’s oldest asteroid impacts. It dates to well over a billion years ago, to a time when our planet was inhabited solely by single-celled life.

From a distance, Biosphere 2 emerges from the cacti and creosote of the Sonoran desert like a gleaming oasis, a colony of ...

Earth scientists often face huge challenges when researching Earth's history: many significant events occurred such a long ...

Strange glass strewn across southern Australia appears to be from a mystery asteroid impact 11 million years ago.