Arctic sea ice
About 1 million square kilometres less of the ocean is covered with ice than in the past seven years, according to new findings, and it's largely caused by the Arctic's record-breaking heatwave.
For people who live near the Arctic, melting ice may signal the end of their world as they know it.
2016 is not very chill.
New data released Friday details "new normal" for sea ice, while a luxury liner will soon carve a once-impassable route through Canada's Arctic.