<p><span style="font-family: georgia, 'times new roman', times, serif; font-size: 15px; line-height: 22px;">Hydrovolts, a start-up company in Seattle, has developed a portable turbine that generates energy from water flowing in irrigation canals. BlackGold Biofuels, based in Philadelphia, takes fats, oils and grease out of wastewater to create biodiesel. <a href="http://www.nytimes.com/2011/03/22/business/energy-environment/22iht-rbog-innovation-22.html?_r=2&amp;ref=water" title="article">More</a> (Source: The New York Times)</span></p>