During the winter months in each hemisphere, the polar regions gain sea ice as seawater freezes. That total amount has been shrinking steadily in recent decades. Sea ice is critical habitat for a ...

See why color-changing squid could help with development of invisibility cloaks ...

Highs will be near 50 degrees in the Denver area on Friday with a mix of clouds and sunshine. Then, a wave of mix rain and snow showers moves through after 3 p.m. A few isolated spots could pick ...