Taxonomy term

multimedia

Rebuilding Afghanistan

Ravaged by war, drought and natural hazards such as earthquakes and landslides, Afghanistan’s people face many challenges. But the country also has untapped resources — great natural beauty , deep supplies of groundwater and a vast mineral wealth, including coal, gems like emeralds and metals like copper and iron.

02 Jul 2009

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 percent of its total energy load with wind power.

The energy will come from Texas wind farms constructed by Duke Energy, which will go online this spring, a Wal-Mart press release said.

That avoids releasing more than 139,000 metric tons of carbon dioxide emissions per year — the equivalent of taking about 25,000 cars off the road, Wal-Mart said.

25 Nov 2008

The Disappearing Lake

For many tourists, Mountain Lake in southwestern Virginia has been an idyllic retreat. But in 2008, it pulled a disappearing act, leaving behind only cracked earth and a small pond.

In this multimedia presentation, EARTH reporter Cassandra Willyard tells the geologic story of Mountain Lake.

 

 

For more information on Mountain Lake, visit these sites:

20 Nov 2008

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 Show cautioned homeowners - especially pregnant women or families with small children - to think twice before installing granite countertops. Granite emits not only radiation, but also radioactive radon gas, explained Today Show correspondent Natalie Morales.

02 Oct 2008

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, combustion simply won’t happen.

That was as true hundreds of millions of years ago as it is today. So wildfires, scientists say, can provide a unique way to estimate how much oxygen was in Earth’s atmosphere throughout its history.

04 Sep 2008

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