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“We ended up with 126 tornado warnings” in Florida, Matthew Elliott, the warning coordination meteorologist at the National Weather Service’s Storm Prediction Center, told NPR.

A criminal complaint alleges that guards pepper-sprayed Othel Moore Jr., placed a mask over his face and left him in a position that caused him to suffocate.

The far reaches of Antarctica are no longer visited only by scientists and their support staff. Adventure tourists and curiosity seekers from Europe, North America and beyond now come by the boatful — and they're bringing some souvenirs from home. Ecologist Steven Chown tells Robert Siegel that visitors unknowingly carry seeds on their clothes and bags. He says they've helped spread dozens of invasive plant species on the continent and risk permanently changing Antarctica's ecology.

Australia has added 750 new species of plants, animals, fungi and other organisms to its official list of species living on the continent.

A new analysis suggests saber teeth were highly specialized for puncturing prey, ultimately at the cost of durability.

Saber teeth — the large canines — are pretty fearsome. These fangs have evolved at least five times in predators that are now extinct, but there's been something of a mystery as to why.

The New York Public Library recently received a machine that will read cracked and scratched wax cylinders — which include some of the earliest recorded audio.

NPR's Ayesha Rascoe speaks with Prof. Dev Niyogi from the University of Texas about his research showing urban topography and pollution exacerbate rainfall.

The morning after the deadly attack on a protest over recent police shootings of black men around the U.S., the mood in Dallas is incredulous.

The "blood worm moon," so named for the reddish hue of its glow and the time of year it's occurring, will be visible in every U.S. state.