Our planet makes a lot of sounds, and some of them are spooky.
The Ocean Discovery XPrize competition announces its semifinalists
Rationally speaking, it would be bad for people and bad for science
Massive space rocks hurtle past Earth with frightening regularity. Some scientists want to deflect them. Others want to drag one closer.
A private company hoping to populate Mars has narrowed its applicant pool by 99.5 percent. Here's a by-the-numbers look at the remaining 1,058 applicants.
Brainy, offbeat, audacious: Meet the new generation of scientific innovators, and be awed.
Welcome to our annual list of inventions changing the world.
Post-9/11 laws protect Americans from the mishandling of potential bioterror agents. They could also slow down some vital medical research.
Logo Usage and Guidelines
With a few simple steps, this shiny beast can play your favorite TV shows and run free arcade classics
On Saturday, November 4, Popular Science and GMA Weekend journeyed to the year 2031 during a special broadcast of Good Morning America
Bike designers Tony Ellsworth and Donald Miller resurrected a 500-year-old idea to change the way people pedal
Will Apple release an upgraded "iPhone without the phone" iPod with a wide-aspect-ratio touchscreen by September 30, 2007?
A "offers web-like support"
Supercomputing power on a single chip
A recent study found that genetics dictated the fighting styles of male and female fruit flies. Podcaster Jonathan Coulton is on the case for more
A new report on marine health could make you queasy.