Humans aren't the only animals who engage in elaborate courtship rituals—view the gallery
Take a tour of the new Hall of Human Origins at the American Museum of Natural History--view the gallery
Prize-winning microviews of everything from mouse retinas to slime mold: Click here to launch the image gallery
New ideas and fresh takes on old favorites-- Click here to launch the gallery
Using the water produced by a fuel cell to regulate the flow of hydrogen, researchers have made it act like an internal combustion engine--the more hydrogen you put in, the more power you get out...
An extraordinary new human fossil comes to light
Tropical cyclones remain nature's fiercest storms