"Patterned ground" in Alaska’s Arctic National Wildlife Refuge. Frozen ground causes formations like these. Source: NSIDC

A heavyweight boxer in the climate change match is missing from the 5th climate assessment report released by the Intergovernmental Panel on Climate Change (IPCC) on Friday.

Permafrost, which is frozen ground that doesn't melt during the summer, covers 24% of the land in the northern hemisphere. Permafrost acts like ...

By Skyepony, Weather Underground Community member

A note from Angela:
"Fracking," or hydraulic fracturing, is the process of fracturing layers of rocks beneath the surface of the earth, using water and other chemicals and fluids, for the purpose of extracting natural gas that would otherwise be impossible to drill. For Earth Day, I wanted to surface the experience of one of our long-time true-blue Weather Underground community members. Skyepony has ...

Satellite image of the large fracture in Arctic sea ice in the Beaufort Sea (north of Alaska). Image from NASA, acquired February 23, 2013.

New images of 2013's Arctic sea ice mega-fracture have been posted on NASA's website. Sea ice fractures are not uncommon, though, according to NASA, the extent of this one is. Two things have combined this year to create the mega-fracture:

1) Arctic sea ice is not what it used to be. It is becoming t...

Our WunderPhotographers have uploaded some fantastic images of the aurora over the weekend. Check them out below!

Image credit: NOAA.

It is National Severe Weather Preparedness Week, and today we're going to make a disaster supply kit. What goes in it depends highly on what your risks are, and the special needs of your family and pets. Water, food, and clean air are important things to have if an emergency happens. Each family or individual's kit should be customized to meet specific needs, such as medications and infant formula. It should also be customized to...