Every summer, Greenland's ice sheet melts when temperatures warm up. This year, however, saw the start of the ice melt season begin in April, much earlier than normal.
For the third winter in a row, temperatures were well above normal for much of Alaska, leaving Alaskans to wonder, where's winter?
Tom Di Liberto explains how algae and other phytoplankton usually behave.
Think 115°F is uncomfortably hot? Imagine it being incredibly humid as well.
From Alaska's Aleutian Islands to southern California, impacts since May have ranged from record-high concentrations of neurotoxins, to shellfish harvesting bans, to reports of sick and dead ocean life.
Hot and dry are the perfect ingredients for wildfires, and the recipe was on the menu across western North America in 2015.
A stagnant weather pattern and plenty of hot air were the necessary ingredients for a record-breaking heat wave in Europe.
Meteorologist Tom Di Liberto explains how an unusual wind pattern and a late monsoon contributed to India's deadly May 2015 heatwave.
On the afternoon of May 23, Alaska set a new statewide record for the earliest day in the year with a temperature in the 90s.
The extreme atmospheric pressure pattern that favored record-breaking snow totals across parts of the U.S. East left Alaskans asking, “Where’s winter?”