Cleaner, more pure water backscatters light in the blue range, which makes it look blue. One famous example is Crater Lake in ...

"The change of seasons causes surface melting far inland from the coastal ice front," glaciologist Christopher Shuman said.

In the Midwest, late March is marked by bare trees, melting lakes, mud puddles and slush all begging to be punctuated by a bud on a tree or a sprig of grass. The Holi festival is ...

Bizarre blue streaks dotted across an ice shelf in Antarctica have been spotted by NASA. These images, snapped by the OLI (Operational Land Imager) on January 1, show pools of pale blue meltwater ...