Walruses use sea ice for mating, giving birth, and resting, which means they face an increasing threat from global warming. 

As the Arctic has warmed over the past three decades, satellites reveal it has also grown greener overall. But in recent years, the tundra appears to be “browning down.” 

The melt season was up to 30 to 40 days longer than average in western, northwestern, and northeastern Greenland, but was close to or below average elsewhere on the ice sheet.  Melt area was above average on 52 of the 90 days of the melt season.

Not only are there now bigger fish to fry in the Arctic's Barents Sea, but scientists predict the natural marine ecosystem will undergo a transformation. 

“Arctic amplification” of climate change remained in full swing in 2015, according to the 2015 Arctic Report Card. Broad areas of the Arctic were more than 5°F (3°C) warmer than average during the report card’s monitoring year (October 2014-September 2015).

Last July, Lake Mead hit a new record low. How is the lake handling the summer so far?

Global temperatures so far this year are record-warm. And aside from eastern North America, we were all in it together.