Hi Tech Pigeon Massenger

Pigeons carrying high-tech backpacks that contain pollution sensors, GPS units, and stripped-down cell phones have been enlisted to create accurate, detailed urban pollution maps. Now scientists are taking the concept of small, low-cost sensors all over the world for their air-pollution research.
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If pigeons wrote their own blogs, they might talk about where to score breadcrumbs or find prime roosting spots.

Now, with the help of tiny high-tech backpacks, pigeons really have become bloggers—but they're posting messages about California smog.

In a project known as PigeonBlog, sensors in the backpacks collect data on toxic gases, such as carbon monoxide and nitrogen dioxide, as the birds wing through city skies.

The information is then sent back to a central computer, which automatically posts a map of the pollutants' concentration on the Internet.

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