In January, a UFO videotaped over Jerusalem made news worldwide. Early skeptical analysis branded it a hoax, but was it?
Paleontologists find one of the largest-ever carnivorous dinosaurs who was also a cousin of Tyrannosaurus rex.
Radiation concerns are escalating, causing medical risks to evacuees in Japan. Meanwhile milk is still safe to drink in the United States.
Is our sun a musician? Yeah, it can bust out some tunes if you hand it an instrument.
A new technique uses microwaves to cheaply convert used motor oil into fuel.
This conceptual habitat would support a floating city with a half million residents.
As workers try and contain radiation leaks from Japan's damaged nuclear plant, we ask the experts about the risks.
The thigh bone of a huge extinct mammal was first recovered by the ancient Greeks and may have inspired a beast in classical mythology.
The start of Arctic spring/summer sea ice melt has begun; tying this year's furthest winter extent south with 2006 as the lowest on record.
Atmospheric waves generated from ocean heat may provide a new explanation for why western cities are usually warmer than eastern cities despite similar latitudes.