13 Unexpected Sources of Energy that Could Save the World

If humans are going to keep living in the style to which we're accustomed, we need to find alternatives for fossil fuels. Partly that's because we need to reduce pollution — and partly because those fossil fuels are going to run out. But alternative forms of energy may look a lot weirder than you think. » 3/31/14 1:02pm 3/31/14 1:02pm

Why a simple bed of algae could save us from water pollution and fuel…

With water shortages looming in the future, we need new ways to clean water that's been fouled by human waste, agricultural runoff and industry. A new article published in BioScience (free PDF link) shows that we can use naturally-occurring algae as a filter. The plants would not only make the water suitable for… » 6/02/11 9:44am 6/02/11 9:44am

We're one step closer to cheap, abundant biofuel

Biofuels are made from carbohydrates and fats in corn and other feedstock. This is a wasteful process because it leaves behind all the protein, a far more abundant substance. As a result, one of the big questions for alternative energy researchers is how we can pull biofuel from protein. Especially because proteins… » 3/08/11 7:20am 3/08/11 7:20am

Fuel-Hungry Pirates Steal Used Cooking Oil to Run Their Cars

Restaurants across the United States are reporting that thieves are stealing their used cooking oil, turning it into black-market biodiesel made in garage distilleries. In many cities where biodiesel fuel is popular, restaurants can earn up to $1.25 per gallon of the used stuff. Oil pirates, however, are rarely… » 5/23/08 7:00am 5/23/08 7:00am