Last Updated 11/21/09 1:25 PM
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Earth & the Environment
Robotics
Health & Medicine
Extreme Machines
Research
Worst-Case Scenarios
Science
Science News
Footage in the Sky: The Truth Behind NASA's "UFO" Videos
Footage recently posted on YouTube is renewing UFO conspiracy theories that the government is hiding knowledge about its interactions with intelligent life. Here, two astronauts talk about NASA's supposed coverup and what really is in these clips. Click For More.
The 10 Most Influential UFO-Inspired Books, Movies and TV Shows
UFO culture began in the 40's, when a pilot's account of a mysterious aircraft triggered reports across the U.S. Authors, movie producers and hack journalists were quick to respond. Here are the books, TV shows and movies that created UFO mythology. Click For More.
U.S. Map of the Top UFO Hotspots and How to Report a Sighting
Where is UFO country? PM went to the Center for UFO Studies' database to find out where the top counties for UFO spotting reside. Here are the top regions for UFO spots along with tips on how to report a sighting. Click For More.
A History of Aliens and UFOs in Pop Culture
The idea of flying saucers has been around since the 1940's. Since then, many depictions of alien spaceships (and aliens themselves) have been eerily similar, even as they evolve with the times. Here's a timeline of UFO culture in the United States. Click For More.
Questions for a UFO Expert: Bruce Maccabee on the Real X-Files, Roswell and His Own UFO Sighting
As scientific disciplines go, UFOlogy—the study of understanding unidentified flying objects—does not get the level of respect that's accorded to, say, physics. Dr. Bruce Maccabee has a foot in both fields. PM talked to Maccabee about his work. Click For More.
UFO Myths: A Special Investigation into Stephenville and Other Major Sightings
What were the speed-shifting, color-morphing UFOs that mystified hundreds of eyewitnesses around Stephenville, Texas, last January? PM spent months investigating UFO conspiracy theories, looking for straightforward explanations. Click For More.
Do You Believe in UFOs? Chat Now!
PM's special report on the science behind UFO sightings attributes reports of flying saucers to military aircraft and flares, meteors and camera effects. Watch some of the sighting footage yourself, read the stories, and let us know what you think! Click For More.
6 Top-Secret Aircraft that are Mistaken for UFOs
The CIA estimates that more than half of the UFOs reported in the 1950s and 1960s were really American spy planes. Here are six (no longer) secret aircraft that people have mistaken for extraterrestrial flying saucers. Click For More.
UFO Footage: Videos of Unexplained (and Easily Explained) Phenomena
They're caught in parking lots and on rooftops by avid UFO-spotters or passersby with camera phones. These particular videos show meteors, clouds, military flares and camera tricks that some claim are sightings in all their grainy, handheld glory. Click For More.
Meteors and Camera Effects Influence UFO Conspiracies
UFO sightings can't all be attributed to military aircraft and flares. Some can be attributed to weird camera effects. Here are the natural nightlights most often mistaken for UFOs, including plasma, meteors and lenticular clouds. Click For More.
Fireball in the Texas Sky: Satellites Crash, but Only Meteors Burn this Bright (With Video!)
This weekend, only days after a U.S. communications satellite collided with a defunct Russian military sat, a fireball appeared in the Texas sky. But after worried calls and FAA warnings, the fireball turned out to be a common meteor. Click For More.Sports
ESPN's Innovation Lab
Researchers at the ESPN Innovation Lab have developed an easy way for ESPN’s on-air analysts to interact with virtual NBA players.ADVERTISEMENT
2009 PM Car Makeover
Almost everyone agrees that hybrid cars are the next big step on our way to an all-electric future. But what if we use two parallel powertrains, gas and electric, to drive a full size car? That way, we can offer the muscular V8 performance that buyers crave, yet still produce zero emissions around town.
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Out Now: Crash Course
In December, PM tackles plane crashes. What happened to Air France Flight 447, and what new technologies can help prevent similar disasters? Also look for 20 Macgyver repair tips, and our annual holiday gift guide. 
It's solar's new dawn. Now new innovations are exiting the lab and plugging into the grid - turning sunlight into serious energy.
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2010 Mercedes AMG SLS
Behind its intimidating stance, there's 563 hp and 479 lb-ft of torque available from the 6.2-liter V8, with all the performance you'd expect from a $200,000 aluminum spaceframe supercar.Mythbusters
Mythbusters Central
Jamie and Adam break down today's tech conundrums, from the moon landing to the state of science in the classroom and more!
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