April 22, 2012 AT 4:26 pm

Happy Earth Day!

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Today is Earth Day! Here are some fun Earth projects to celebrate the planet. Post yours up in the comments! Above: The Weather Balloon Project.

Adafruit customer “goes to space”

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Interview with Jeff Crystal and Phillip Stearns @ EEWeb

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USB, DC & Solar Lipoly charger tutorial

Solar Temperature Badge

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