Here are the finalists in Slate's energy-efficiency crowdsourcing contest. Please vote for your favorite.

Here are the finalists in Slate's energy-efficiency crowdsourcing contest. Please vote for your favorite.

Here are the finalists in Slate's energy-efficiency crowdsourcing contest. Please vote for your favorite.

The Hive
Collective wisdom.
April 12 2010 8:03 AM

Twelve Ideas. Choose the Best One.

Here are the finalists in Slate's energy-efficiency crowdsourcing contest. Please vote for your favorite.