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Bacteria abound, even inside hailstones.
Complex behaviors, such as the way some mice dig burrows, can be affected by changes to just a handful of genes.
Our hominid ancestors may have spent time in the trees more recently than previously thought.
The stellar neighborhood just got more crowded. A team of European Astronomers say they've detected what appears to be a planet about the same mass as Earth orbiting the star Alpha Centauri B, one of Earth's closest neighbors.
A newly-identified species of fanged dwarf dinosaur dined on plants some 200 million years ago in what is now southern Africa.
Science Friday extends its congratulations to marine ecologist Nancy Rabalais, one of the newly-named MacArthur Fellows for 2012.
Shortly before his death in 1996, astronomer and science broadcaster Carl Sagan recorded a message to future Mars explorers.
Forget the beach house or summer cabin at the lake -- we invite you to kick back and relax in Antarctic explorer Ernest Shackleton's hut.
Hoping to see the disk of Venus cross the sun? We'll tell you how to spot this rare astronomical event.
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