Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Harvard astrophysicist Avi Loeb has floated the provocative idea that humans might themselves be alien‑made 'autonomous probes,' built through advanced synthetic biology rather than evolving entirely ...

Scientists tested spraying seawater onto Arctic ice, which showed promising initial results. The treated ice became thicker ...

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

Spielberg’s sci-fi blockbuster starring Emily Blunt and Josh O’Connor may be spectacular, but it misjudges how much humans are prepared to tolerate abuse of groups we see as ‘other’ ...

China is waging a 72-year, $56 billion war against its own deserts, planting 100 billion trees across an area larger than ...

Teetering near endangered status, the starlet sea anemone produces “an ancient mechanism” for fighting viruses that ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals . Unexplained gases on other planets. Things mistaken for UFOs ...

From Metroid Prime to Mass Effect 2, these sci-fi games are the very definition of perfection, offering experiences unlike ...

Something is absorbing light on the surfaces of Pluto and Saturn’s moon Titan, and figuring out what it is could be crucial to understanding Titan’s complex chemistry ...

Lilo & Stitch 626 #2 hits stores Wednesday! Can Stitch learn to swim, or will a giant squid ruin everything? Plus: flashback ...