More than 220 million people across the United States are facing dangerous cold that will also open the door for a potentially historic and crippling winter storm that could deliver snow as far south as Florida and the Gulf of Mexico.

Some recent studies found fluoride exposure is associated with cognitive impacts in children, but the research isn’t conclusive. Still, many Floridians say there’s enough evidence to warrant concern.

Arctic air grips the central and eastern U.S., bringing record-breaking cold, dangerous wind chills, and historic snowfall. Newsweek's live blog is closed.

WASHINGTON — An executive order signed by President Donald Trump attempting to deny birthright citizenship to the children of immigrants who are born in the United States is likely to face immediate legal challenges — but, if enacted, could have dramatic consequences in places like South Florida.

On Tuesday, a historic winter storm left regions of the South blanketed in snow, including Florida, Texas and Louisiana.

Greece's main zoo announced it would send its five captive dolphins to a Florida aquarium, a move that has sparked controversy and outcry

Florida Gov. Ron DeSantis has declared a state of emergency for the state of Florida ahead of a major winter storm sweeping across the southeast, which is expected to bring frigid temperatures to parts of Florida,

Two new senators were sworn in on Tuesday to replace new Secretary of State Marco Rubio and Vice President JD Vance.

Some recent studies found fluoride exposure is associated with cognitive impacts in children, but the research isn’t conclusive. Still, many Central Floridians say there’s enough evidence to warrant concern.

The United States is currently experiencing an intense cold front linked to the so-called Arctic “polar vortex”. The icy air that has particularly affected the central and eastern United States is now descending as far as the Gulf Coast.

California is advising health care providers not to write down patients’ immigration status on bills and medical records and telling them they don’t have to assist federal agents in arrests. Some Massachusetts hospitals and clinics are posting privacy rights in emergency and waiting rooms in Spanish and other languages.