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Galaxy Quest: Just How Many Earth-Like Planets Are Out There?

About 22 percent of sun-like stars in our galaxy may have planets orbiting them that are about the size of Earth and bathed in similar amounts of sunlight, according to a new analysis of data from the Kepler Space Telescope.

Childhood Maltreatment Can Leave Scars In The Brain

Brain scans may help people who were ill treated as children realize that they process fear differently than others. They may have a harder time realizing what's truly a threat and what's not. Researchers say that can lead to increased risk of anxiety and depression.

How To Levitate A Sandwich: 'Modern Cuisine' Spills Photo Secrets

A ham and cheese sandwich floats in midair. A Weber grill is sliced in half to expose a burger sizzling inside. The Photography of Modern Cuisine is both a visual feast and a practical guide to food photography.

How'd They Do That? The Story Of A Giant Rock And A Road Of Ice

Huge stone slabs weighing up to 300 tons that now reside in Beijing's Forbidden City were slid more than 40 miles in 15th- and 16th-century China over water-lubricated ice roads in the dead of winter. Though spoked wheels had been around for almost 3,000 years, the ice roads were smoother and required less manpower.

Why Are Pig Farmers Still Using Growth-Promoting Drugs?

There's a curious twist in the contentious debate over feeding antibiotics to animals in order to make them grow faster. Evidence suggests using antibiotics for growth promotion, at least among pigs, doesn't even make economic sense. But some pork producers don't believe it.

China Sets Ambitious Agenda In 'Asian Space Race'

India launched its Mars mission on Tuesday. But China is still leading what some see as a space competition among Asian countries. It has worked on a lunar rover, a space station as well as its own unmanned mission to Mars.

Rapping Biology? Why Science And Hip-Hop Works

Engaging students in science class is no easy task but using hip-hop may be one way to get their attention. Research scientist Danielle Lee uses hip-hop to bridge the gap between culture and science.

As Mirrors Beam Light To Town, Norwegians Share Patch Of Sun

Rjukan lies in the shadow of surrounding mountains for nearly six months every year. But the town recently installed a system of mirrors to bring sunlight to its central square. Not everyone can bask in the glow at the same time, but the project is bringing residents together.

Space Agencies Of The World, Unite: The U.N.'s Asteroid Defense Plan

NASA has already scoped out most of the comets and asteroids large enough to do global damage. But the United Nations thinks an international consortium of space programs need to get together in an effort to stop smaller — but potentially still dangerous — asteroids from hitting Earth.
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Fairfax County School To Put First Student-Built Satellite In Orbit

More than 50 students out of Thomas Jefferson High School in Fairfax County helped build a satellite that will be put into orbit later this month.