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Interactive Infographic: Which Renewable Energies Do We Use Most and At What... In the U.S., only about 8 percent of all energy use comes from renewable sources. Petroleum is currently our largest consumed source of energy (37 percent), with natural gas (25 percent), coal (21 percent), nuclear power (9 percent) and renewables following behind. However, renewable energy consumption is rising steadily, with the largest increases in biofuels, hydroelectric power, and wind. Currently, the cost of generating electricity with coal and natural gas is still cheaper by kWh, but new technology and interest in renewable resources is helping alternative energies become more cost-competitive. Check out this infographic for a look at which of these renewable sources are used most widely in America and at what cost. A collaboration between GOOD and Deeplocal, in partnership with GE

PopTech 2011 Science and Public Leadership Fellows Announced - Technology Scientists don't rise to celebrity status that often, and for good reason. Many would rather spend their extra hours in the research lab rather than courting public favor. But what if there was a middle ground and scientists could serve as public leaders, shepharding their research through public debates? Would we make fewer stupid decisions? "Visible scientific leaders shouldn’t be a rarity," says Andrew Zolli, executive director of PopTech. Foster social change: Help scientists not be boring. PopTech just announced its 2011 fellows, and the list is worth a gander. For a taste of this unique philosophy, here's a video about the program from last year's PopTech conference.