The American Clean Energy & Security Act may change the way houses are sold. Homeowners may be forced to disclose an “energy performance score” when it’s time to sell.

It's no secret that overfishing has driven many tuna species including the iconic blue fin to the brink of extinction. But there is plenty of disagreement over what should be done about it.

U.S. Energy Secretary Steven Chu wants to paint the town white. At a climate change symposium in London, Chu said that painting roofs white would be part of a "new revolution" to cut greenhouse gases, according to AFP.