A 2017 astronaut photo shows the islands of Dek and Daga lurking in the murky, algae-infested waters of Ethiopia's Lake Tana.

A newly discovered comet is about to make its closest pass to Earth on Tuesday night. It should be visible over the Bay Area ...

Several bats glow bright green under ultraviolet light. The glow could reveal clues about evolution in these mysterious night ...

China's rare earth export curbs threaten the clean energy supply chain, but global exposure helps ETFs like PBW, FRNW, and ...

As Anne Cubberly's Hartford-based crew bring Muchos Colores and Mother Earth to New Haven's "No Kings" protest.

Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that ...

This is what’s known as the "Purple Earth Hypothesis", an idea first proposed by Professor Shiladitya DasSarma, molecular ...

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail ...

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere ...

A rare, green-glowing comet will make its closest approach to Earth next week — and it won’t return for more than a thousand ...