The Founding Fathers who gathered in Philadelphia to adopt the Declaration of Independence on July 4, 1776 picked a nice day ...

The polar vortex is Earth's frozen guardian—but that guardian is starting to fail. This video dives into the science behind ...

The mass of extremely warm air threw the freezing polar vortex out of balance, shoving it off its North Pole axis so forcefully that it in effect split in two, as if growing a pair of legs: one ...