Instructables has teamed up with Discover magazine to bring you the Green Science Fair For a Better Planet!

Think green, share what you've learned, and win some great prizes!

You could: build an eco-friendly project, test and compare "green" products, repurpose old parts, or just show us greener way to live.

Put on your lab coat, grab your notebook, and start testing those hypotheses!

(contest information and official rules)

The Discover Green Science Fair for a Better Planet is closed.

18 PRIZES

First Prize (1 winner)

Celestron SkyScout: use advanced GPS technology with point and click convenience to identify thousands of stars, planets, constellations and more. Plus Instructables Robot t-shirt, patch, and stickers.

Second Prize (2 winners)

Sansa Express 1GB MP3 player, Instructables Robot t-shirt, patch, and stickers.

Third Prize (5 winners)

Eton FR150 Microlink: Solar-Powered, Crank-powered Portable Radio with Flashlight and Cell Phone Charger.

Runner-Up (10 winners)

20 Things You Didn't Know About Everything, a book from the Editors at Discover magazine.
HOW IT WORKS

Write an Instructable

Create a new Instructable that fits the guidelines outlined in the contest description above. To be eligible, Instructables must be published between Apr 4, 2008 and Jun 8, 2008 (11:59pm PT).

Enter

Upon publishing your Instructable you'll see checkboxes for open contests. Select Discover Green Science Fair for a Better Planet. If you have entries currently eligible for entry, it will also show up by clicking "Enter this Contest" on the right side of this page.

Accepting

Entries are accepted by Instructables staff within one business day Monday - Friday. What matters is the submission time, not acceptance time.

Voting

Instructables members can vote for an entry during the contest plus 3 days after the contest closes.

Judging

A panel of judges made up of Instructables staff and respected members of the community rate the finalists. The averages of the ratings determine the winners.

Winners

When the winners are decided they will be announced here on the contest page. All entrants will be notified when this happens.