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Will GPS Change Our Standards for Privacy?

Todd Humphreys forecasts the near-future of geolocation when millimeter-accurate GPS "dots" will enable you to find pin-point locations, index-search your physical possessions — or to track people without their knowledge.

What Predictions From 1984 Came True?

Back in 1984, technology leader Nicholas Negroponte was able to predict, with surprising accuracy, e-readers, face to face teleconferencing and the touchscreen interface of the iPhone.

Treating Kids' Cancer With Science And A Pocket Full Of Hope

Lessons in optimism from very ill children inspire pediatric oncologist Jim Olson in his hunt for better treatments for brain tumors. If a boy too sick to get out of bed can still find a way to have a snowball fight with his older brother, then Olson figures he can find ways to improve brain surgery.

'Rivers On Rolaids': How Acid Rain Is Changing Waterways

The chemistry of dozens of streams and rivers across the U.S. is changing. Waters are becoming more alkaline — the opposite of acidic. And the reason is counterintuitive — researchers believe that acid rain is to blame.

Living Gears Help This Bug Jump

Planthoppers are champion jumpers - launching themselves upward, hundreds of times their own height, in just a couple milliseconds. They achieve this feat with the help of cog-like teeth on their legs — the first mechanical gear system ever found in nature.

See Ya, Voyager: Probe Has Finally Entered Interstellar Space

"This is the real deal. Voyager 1 has finally reached interstellar space; the first time a spacecraft has been in the space between the stars," says one project scientist. Launched in 1977, the probe has been surveying the solar system.

Voyager Has Left The Solar System (This Time For Real!)

The venerable probe has finally departed for interstellar space, but there's a reason the news might give you a feeling of deja vu.
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Eric Schlosser: "Command And Control"

Investigative journalist Eric Schlosser explores the dilemma that has existed since the dawn of the nuclear age: How do you deploy weapons of mass destruction without being destroyed by them? He joins guest host Steve Roberts in studio to talk about his new book, "Command and Control: Nuclear Weapons, the Damascus Accident, and the Illusion of Safety."


Why Painting Tumors Could Make Brain Surgeons Better

Cut a tumor from a child's brain and you may save a life. But surgery can hurt the child if healthy brain cells are removed. A Seattle doctor is working on a substance that might help. It binds tightly to cancer cells and makes them glow, so they're easier to distinguish from healthy tissue.

Satellite Image Suggests North Korea Is Restarting Reactor

A photo snapped from space shows steam rising from the facility housing the 5-megawatt reactor at Yongbyon that was dismantled as part of disarmament efforts five years ago.