Trump assumes office at an indoor inauguration ceremony, while supporters gather at the Capital One Arena to celebrate.

A polar vortex that has hit much of the U.S. with ice and snow has dealt a glancing blow to Florida, dropping coastal temperatures and causing the Sunshine State’s manatee popula ...

Florida's manatee population is seeking warmer waters due to a polar vortex, with many gathering near power plants. The species is still recovering from a mass starvation event.

Why herds of manatees are huddling in water near America's power plants - A polar vortex that has hit much of the U.S. in a ...