Parts of the Great Barrer Reef have suffered the highest coral mortality on record, Australian researchers say, and they fear the rest of it has suffered a similar fate.

Some lowland areas in the north Sound woke up to another round of fresh snow Tuesday morning. ... A winter weather advisory issued for parts of Snohomish and Island counties expired at 9 a.m. Tuesday.

NASA has released a new image providing photographic evidence of Boom Supersonic's XB-1 prototype aircraft breaking the sound barrier. Captured on the second supersonic flight, it used a special ...

On February 10, in the skies above the Mojave Desert, the Boom Supersonic XB-1 test jet roared past Mach 1, tearing through the sound barrier. But this time, there was no need to take it on faith.

The iconic tagline of the 1979 sci-fi film "Alien" tells us that "in space no one can hear you scream." This was based on the fact that space is a vacuum, a region devoid of any particles.