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The rear end of a 'Psittacosaurus' fossil was so well-preserved that scientists were able to reconstruct it. It even had a little poop in it.
When tetrapods (four-limbed vertebrates) began to move from water to land roughly 390 million years ago it set in motion the rise of lizards, birds, mammals,...
An unknown ultraviolet signal may indicate the presence of hydrazine on Saturn’s second-largest moon, Rhea.
Using data from the Cassini mission, scientists detected hydrazine on Rhea's surface — the first such detection in the Solar System.
Scientists on the International Space Station spotted a bright-blue lightning bolt shooting upward from thunderclouds. Blue jets can be difficult to spot from the ground, since...
A paleontologist says the newly discovered dinosaur butthole specimen is “perfect” and “unique.”
German researchers have enabled mice paralyzed after spinal cord injuries to walk again, re-establishing a neural link hitherto considered irreparable in mammals....
In June 1991, Mount Pinatubo, a volcanic peak on the Philippine Island of Luzon, literally blew its top. It was the second-most powerful volcanic eruption of...
The formation of crystals is one of the most commonplace processes you can probably think of. Every time you freeze water into ice cubes, for instance,...
The high-altitude hop could come as early as Monday (Jan. 25).