Ice shelves in Antarctica are like conveyor belts, continually carrying ice to the sea. Scientists have found hidden canyons on their undersides that may affect the shelves fragility.
Photographer Paul Smith said he thinks this may be the 1st documented capture of a red sprite over Oklahoma. They're large-scale electrical discharges - high above thunderstorm clouds - flickering in the night.
Scientists have just returned from a major expedition to Zealandia, a "hidden" Earth continent, likely submerged beneath the sea surface more than 80 million years ago.
Scientists are a step closer to resolving this head-scratcher. And their findings have potential consequences for the fight against pain and addiction.
A study suggests the asteroid that wiped out the dinosaurs 66 million years ago increased the pace of evolution in birds, their only remaining descendants.
OSIRIS-REx swept past Earth on September 22 and received a gravity boost toward its goal, asteroid Bennu, in 2018. It also acquired the images to make this stunning new Earth portrait.
The calving of this iceberg in July reduced the size of Antarctica's Larsen C ice shelf by 12 percent. The berg hung near the coast awhile, but now it's seen drifting.