January 5, 2012
Wal-Mart to use wind energy
Wal-Mart’s reputation for cheap prices precedes it, but recently the retailer showed its greener side when it announced plans to supply 15 …
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January 5, 2012
Trial by Fire
What makes a fire burn? In addition to fuel (such as wood or paper) and heat, fires need oxygen. If there isn’t enough oxygen in the atmosphere, …
January 5, 2012
Rebuilding Afghanistan
Ravaged by war, drought and natural hazards such as earthquakes and landslides, Afghanistan’s people face many challenges. But the country also …
January 5, 2012
Putting Earth's history to sound
Geophysicist Dave Engebretson of Western Washington University in Bellingham has struggled with his eyesight since birth. But when his vision …
January 5, 2012
Musical magnetic reversals
Although Earth’s magnetic field currently points toward the North Pole, the planet’s magnetic dipole flips direction every few hundred thousand …
January 5, 2012
Granite countertops: NOT silent killers
Nothing says class like a thick slab of polished granite. The stone is so durable. So chic. So modern. So...radioactive? On Sept. 2, NBC's Today …
January 5, 2012
Designing Snowflakes
It's easy to forget that powerful snowstorms are made of tiny, delicate ice crystals we call snowflakes. Some snowflakes take a familiar …