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Behind the Scenes: Powering the planet

This was, to be honest, simply a different kind of journalism. I've never done anything quite like it.

CNN Student News Learning Activity: Understanding earthquakes

Direct students to their textbooks and online resources to learn about what causes earthquakes and the scale used to measure an earthquake's magnitude. Then, organize students into small groups and assign each group one year between 1999 and 2008. Refer groups to print and online resources to learn more about the most significant earthquakes that took place in their assigned years. On a large map of the world, have students mark (with small circle stickers or markers) the locations of these earthquakes. Based on their observations, have students make hypotheses about why earthquakes occur where they do.

Texas sinkhole calm for the moment

Geologists said a 260-foot-deep sinkhole that grew to the length of three football fields over just two days seemed to be slowing down Thursday, but it could take months before it's clear whether surrounding areas are stable.

Fortune: Hunting for oil beneath the ice

It's 25 below outside, and the heat in the van is busted. Randy Boyer, a burly ConocoPhillips contractor in thermal coveralls, navigates the slick ice road. "This is nothing," he says, keeping his eye on the thin red line running down the center of the road. "The other week we had a whiteout, and I was stuck in my truck for 36 hours." Right now we're some 250 miles north of the Arctic Circle, and it's so white outside that the distant horizon appears to blend seamlessly into the blustery sky.

15th-century shipwreck laden with treasure found

The ship was laden with tons of copper ingots, elephant tusks, gold coins -- and cannons to fend off pirates lurking off Africa some five centuries ago.

Time.com: Major Quake Due in California

California faces an almost certain risk of being rocked by a strong earthquake by 2037, scientists said Monday in the first statewide temblor forecast

Time.com: Tsunami Linked to Yellowstone Crater

Tsunami-like waves created by an earthquake may have triggered the world's largest known hydrothermal explosion some 13,000 years ago, a federal scientist says

Fortune: Platinum fever

Half a mile below the red-rock African landscape, mine manager Charl Geldenhuys points to an array of fluorescent-orange circles spray-painted at a dark tunnel's rocky end. "That's where we blast tomorrow," he shouts over the din of a machine drilling dynamite holes.

Quick facts: Geothermal Energy

Most people have an inkling that if you drilled down to the Earth's core, it would feel pretty hot down there -- around 5,500 degrees Celsius (9,932 degrees Fahrenheit) to be precise, in fact, according to Greenpeace. (Nearer the Earth's surface, however it is a more bearable 10-16 degrees Celsius (50-60 degrees F) all year round.)

Fortune: Chevron's CEO: The price of oil

Oil companies are blamed (unjustly) for high gas prices, loathed for profiting from them, and criticized for their environmental record. So it's no wonder that most industry CEOs have made themselves scarce. Chevron's David O'Reilly is the exception. He regularly talks to reporters and appears on television to answer questions about Chevron and the industry.

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