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11.23.09

Animated Map Visualizes Greenhouse Gas Sources

Where U.S. carbon dioxide emissions come from...and where they go.

By Dawn Stover Posted 04.07.2008 at 4:53 pm 4 Comments

Vulcan CO2 Map: Color-coded for output density Purdue University

A new system for mapping carbon dioxide emissions in the U.S. will help regulators figure out exactly where these emissions are coming from and how best to reduce them. Among human-produced gases that contribute to climate change, carbon dioxide is public enemy number one.

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Where Undersea Cables Go

The Internet depends on three-inch-thick cables that stretch from continent to continent

By Lauren Aaronson Posted 02.08.2008 at 1:31 pm 4 Comments

Undersea cables have made big news in the last few days, ever since several cables were cut last week near Dubai and Alexandria, disrupting Internet service all over the Middle East. (The latest news: It looks like a ships anchor sliced one of the cables. Oops!) The accident draws attention to how much our modern lives depend on unseen cables—just three inches thick and buried under sand—that most of us have never even thought about. There are hundreds of thousands of miles of these things snaking under our seas, with even more on the way.

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