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Time-lapse images let you witness 28 years of Earth's changes

A newly released series of dramatic time-lapse satellite images, available at Google's Timelapse Web site, shows just how quickly the world's landscapes have changed in the last 28 years.

The pictures, captured by the series of Landsat satellites and released in conjunction with the U.S. Geological Survey, NASA, and Time magazine, show several startling examples of how humans and natural processes have changed Earth from 1984 to 2012. You'll see the depressing decline of the Columbia Glacier in Alaska, the blossoming of Dubai's epic cityscape, and Las Vegas' urban explosion. There's also an alarming look at the deforestation occurring in the Brazilian Amazon forest. … Read more

Magnitude 5.6 Twitterquake hits Bay Area

It was only because I was changing my son's diaper at 8:04 PM tonight that I wasn't online immediately after the house stopped shaking. But when it did, and I did, and the boy was asleep, and the house was checked for damage (none), and the wife was confirmed OK, what's the first thing I did? I went to the USGS Web site to see what had happened and to Twitter (via Snitter) to see how my friends were doing.

As I've written before, disasters are social, and Twitter is a great social platform for … Read more