A collapsing polar vortex brings Arctic blast to Chicago area. How long will it last?
Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge...
Science
The US is on the verge of losing its measles elimination status. Here’s why that matters.
Experts fear the vaccine-preventable measles virus has regained a foothold and that the U.S. may soon...
NASA’s new moon rocket heads to the pad ahead of astronaut launch as early as February
NASA’s giant new moon rocket headed to the launch pad Saturday in preparation for astronauts’...
New research bolsters evidence that Tylenol doesn’t raise the risk of autism despite Donald Trump’s claims
A new review of studies has found that taking Tylenol during pregnancy doesn’t increase the...
NASA sends 4 astronauts back to Earth in first medical evacuation
The four returning astronauts — from the U.S., Russia and Japan — are aiming for...
Outreach workers pass out free fentanyl detection devices to help screen drugs, reduce risk of overdose
A young man approached a card table set up under the Green Line tracks on...
American Heart Association revives theory that light drinking may be good for you
Now the American Heart Association has revived the idea in a scientific review that is...
The year’s first meteor shower and supermoon clash in January skies
The Quadrantid meteor shower peaks Friday night into Saturday morning, according to the American Meteor...
Bomb cyclone brings blizzards to the Midwest before turning east
A strengthening bomb cyclone barreled across the northern U.S. on Monday, unleashing severe winter weather...
How bomb cyclones form and create dangerous conditions
When turbulent weather with whipping winds and heavy snow is in the forecast, meteorologists sometimes...