Lightning near the North Pole reveals dramatic climate changes as Arctic temperatures rise and storms intensify.

The new moon occurs April 27, and a day later Venus and Saturn will make a close approach to each other (known as a ...

Extremely low sea ice levels in the Arctic and Antarctica signal a "new normal" that may accelerate global warming and ...

The Tara Polar Station, a $23 million research vessel with a crew of 12, will drift across the Arctic ice to enable better ...

Ice and snow reflect a lot of sunlight, back out into space; but Earth’s major sunscreen is cloud. Clouds, especially over ...

The frozen expanses of the Arctic are fast becoming some of the world’s hotspots. President Donald Trump’s bid for Greenland, and growing Russian and Chinese interest in opening the sea lanes along ...