Chicago’s Lake Michigan waterfront froze during the 2019 polar vortex.
AP Photo/Kiichiro Sato
Natural gas supplies are growing, but so are other markets for it besides power generation.
A pedestrian crosses a street bundled up against the subzero temperatures carried by a polar vortex.
Layering on winter gear is annoying. But with temperatures reaching minus 50 in some parts of the country, it is essential to protect your skin from frostbite, which can happen in minutes.
Water in its solid phase, also known as ice.
AP Photo/Tony Dejak
An atmospheric scientist explains why water can do some strange-looking things at very cold temperatures, and what's different about snowfalls on Mars.
Bundled up against the cold in downtown Chicago, Sunday, Jan. 27, 2019.
AP Photo/Nam Y. Huh
Life-threatening cold temperatures in the central US are caused by changes in wind circulation in the Arctic that bring cold air south. Climate change could make these events more frequent.
University of Maine, Climate Change Institute
But it's too early to tell whether climate change is to blame.
It’s all in the atmosphere.
Many people around the world, in certain locations, have asked, “where is global warming?” This is because they have experienced very cold wintry conditions and weird weather that they do not associate…