Galactic Jet Galactic Jet Image courtesy T. Pyle, JPL-Caltech/NASA Powerful jets of ga...
Alpine Night Alpine Night Photograph courtesy NASA Moonlight glints off coastal waters...
Eating Crocodile Helped Boost Early H  A prehistoric crocodile skull on display at a Kenya museum (file photo). C...
Snails on Meth Have Sharper Memories A great pond snail clings to a plant stem (file photo). Brian Handwerk fo...
Guatemala Sinkhole Created by Humans,  The sinkhole appeared Sunday in downtown Guatemala City, swallowing a three...
阿根廷出土巨型恐龙 Giant Dinosaur Unearthed in Argentina An artist's rendering depicts a newl...
"Hobbits" Were Separate Spe  A model of Homo floresiensis's skull (right) is shown with a modern human's...
Giant Toxic Coal Ash Spill Threatens   On December 22 a billion gallons of poisonous sludge—largely coal ash, a b...
"Blue Straggler" Stars Cann  The core of globular cluster 47 Tucanae contains a number of "blue straggle...
How Do Species Evolve? January 23, 2009--Two hundred years after Charles Darwin's birth, National ...

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