Nikola Tesla and Thomas Edison battled it out in the "War of Currents," but each inventor left a significant scientific legacy.

Experts have said that a slight spike in radioactivity above northern Europe likely originated in Russia, but Russian nuclear plants in the area deny any abnormalities.

Protesting during a pandemic can be risky. Here are ways to lessen the risk and what to do after you've attended a protest against police brutality spurred by the death of George Floyd.

Here's a look at the number of coronavirus cases in Texas and the latest news on the COVID-19 outbreak.

Here's everything you need to know about the tests.

Between 50 and 85 times as many people in Santa Clara County have coronavirus antibodies as have tested positive for the virus.

Here's a look at the number of coronavirus cases in Virginia and the latest news about the COVID-19 outbreak.

Here's a look at the number of coronavirus cases in Vermont and the latest news about the COVID-19 outbreak.

We still don't fully understand how the new coronavirus spreads, but we're learning more every day.

The test gives results in 45 minutes.

More people in the U.S. are seeking medical care for flu-like, but are testing negative for flu. That could suggest the spread of the new coronavirus is picking up steam in the U.S.

Two other people tested positive at a long-term care facility, and dozens of others have symptoms.

A case of COVID-19 has been confirmed in a Northern California resident who had no travel history to an affected area and no known contact with a person previously diagnosed with the coronavirus.

These strange discoveries will suck you in.

Our planet sure is a strange one.

Scientists have discovered a mysterious population of previously unknown cells lurking in the human body, and they may trigger Type 1 diabetes.

Still a dangerous storm, Dorian plowed over North Carolina's Cape Hatteras this morning.

It's barely budged over the last several hours and is dumping huge amounts of rainfall on the island of Grand Bahama.

The monster storm has been getting stronger, but its predicted track moves it a hair away from South Florida.

It's possible that the recent quakes could be the straw that broke the camel's back for the San Andreas Fault, which is way overdue for a major rupture.

This time, a magnitude-7.1 temblor struck the region near Ridgecrest, California. Experts say the next one could be even bigger.

They're getting really good, really, really fast.

Here's a guide to the Atlantic hurricane season, including predictions, naming conventions and how to prepare for a storm.