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.

Jenny Rogers is a Slate intern.

  Slate Plus
Politics
May 22 2015 11:14 AM What Happened at Slate This Week? Assistant interactives editor Andrew Kahn on the best of Slate, from the history of slavery to Mad Men.