More than 100 million years ago, when the grasslands of Montana were dotted with redwoods and ferns, there lived a diminutive dinosaur the size of a crow with a face that resembles an eagle.
After a 10-year journey through the solar system, an epic rendezvous with a speeding comet, and the drama of Philae's triple landing, the science phase of the Rosetta mission has officially begun.
There are dark and massive fields of sand dunes on the surface of Saturn's moon Titan, and this week two scientific papers look at how they came to be.
How can a guineafowl, two million poppy seeds and an x-ray machine help scientists understand how the dinosuars walked?
NASA's New Horizons spacecraft is awake and doing fine.
Scientists say that a series of marks carved onto a freshwater clam shell represent the earliest known engravings made by a human ancestor.
It's a 500-year-old missing persons case, and researchers say it has now been solved, definitively.
In the slippery tide pools of San Pedro’s Point Fermin, there are sticky green sea anemone, hard-shelled limpets, barnacles shaped like mini-volcanoes and even small octopuses hiding between gaps in the rocks.