Adam Block

Sep. 19, 2008

Arizona Astronomy

With it's dark skies and world class telescopes, Arizona is close to heaven for amateur astronomers. In this segment, we'll help you get the best view of the night sky, with two of the regions top star gazers.

telescope, skygazing, stars, planets, astronomy

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Michael Pollan Talks Plants and Food

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How Humpbacks Hunt With Bubbles

Humpback whales blow bubbles around schools of fish to concentrate them for easier capture. It's called a bubble net, says David Wiley, research coordinator for Stellwagen Bank National Marine Sanctuary, and it's visible as a ring of bubbles at the surface. Now, with underwater digital tracking tags and custom visualization software, whale researchers can see what the whales are doing underwater when they're bubble-netting.

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