Methane emissions in Sweden’s Siljan Ring lakes are up to 300 times higher than expected, raising climate concerns.View on ...

A “city-killer” space rock headed for a potential collision with the Moon likely originated in the asteroid belt near Jupiter, a region not known to produce Earth -crossing asteroids, according to a ...

About 66 million years ago, an asteroid slammed into the planet, wiping out all non-avian dinosaurs and about 70% of all ...