The now-extinct giant beaver once lived from Florida to Alaska.
Know what to look out for.
But can it work well enough to generate reliable leads?
Or at least a sense of history.
NFL players have been accused of using deer antler spray, a banned performance enhancer with a bizarre name.
How science is transforming the sport of MMA fighting
Some of the greatest moments ever in figuring out how stuff works
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Sometimes it hurts to be reminded of fundamental principles of physics
An astonishing look at some of the universe's most violent events: supernovae, gamma-ray bursts, collisions between galaxies and more
Wings, antennae and scales may be our best weapons yet against toxins and explosives
Earlier this week, lava flows put the volcanic Italian island of Stromboli on high alert. Here, we show you how scientists are using tech to better forecast when volcanoes worldwide are likely to blow
The U.S. Army Corps of Engineers reveals the root cause of the failed levee system: itself
Stephen Hawking's new book strives to explain how everything works.