Imagine if every time you played FarmVille you also reduced your carbon emissions... or, perhaps more realistically, you gained a point for every time you shopped with a reusable bag, and those points added up for coupons or savings? According to gamification advocates, those incentives might end up changing your behavior.

Here's to hoping that Mother Nature doesn't let the children down on June 15, annual Global Wind Day. Scientists, researchers and sustainability activists can all agree that there is way more to celebrate on this day than just some false promise of flying a kite in a field. Organized by the European Wind Energy Association (EWEA) and the Global Wind Energy Council (GWEC), Global Wind Day aims to celebrate and promote the discovery and possibilities that result from wind power, the least expensive form of alternative energy.