This week on TreeHugger, penguins guide underwater glider robots, Richard Branson is at it again with cool submarines, Kinect is hacked for cooler teleconferencing, open-source barcode scanners created to track zebras, and more!

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Penguins Used To Guide Underwater Robots

Like a robot entourage...

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Breakthrough in the Lab Could Mean Batteries that Charge in Minutes

Making electrodes with foams could give us way better batteries.

Cleaning Up Oil Spills With a Swarm of Autonomous Sailboats

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An army of oil-cleaning sailboats - and they look awesome.

Where Will Debris from Japan's Tsunami Go? See Where Ocean Flows Are Carrying It

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You'll be surprised at what ends up where. Also, Send Your Message of Support to Japan (Auto-Translated!)

Crowd-Sourced Barcode Scanner Created For Identifying Zebras

Scanning them instead of tagging them!

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Sir Richard Branson's Deep-Sea Submarine to Explore Ocean's Unknown Depths

This guy does the coolest stuff...
Great Video Tribute to NASA's 13-Year-Old Color-Sensing Satellite

You may be surprised at how much this one satellite changed the way we view Earth from space.

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iPhone App Makes Swapping Your Stuff Super Simple

Scan it with your phone, and swap it for something you'll actually use.

Revolutionary System for Reading Uses Optical Scanners, Is Battery-Free (Video)

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The ultimate gadget.

Kinect Used For Making Teleconferencing WAY More Awesome (Video)

Now *this* is how teleconferencing should be done.

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TreeHugger's EcoModo column appears every Tuesday on Gizmodo.