December 10, 2016, 11:29:20 AM EST
Piercing cold will send temperatures tumbling to dangerous levels for some across the central and eastern United States this week. more
A satellite image showing peculiar hexagonal clouds over the ocean area known as the Bermuda Triangle is prompting speculation about whether they may represent a recurring phenomenon responsible for decades of unexplained disappearances in the region.
Atmospheric oxygen levels have declined over the past 1 million years, although not nearly enough to trigger any major problems for life on Earth, a new study finds.