Fuel

PHILADELPHIA -- Among the many renewable energy sources -- wind, solar, hydroelectric, biofuels -- there is one to which we all contribute that has not yet managed to attract the romantic advocates who have embraced other forms of green energy.

We're speaking about the gray river of warmth flowing right beneath our feet: sewage.

OGDEN — Neighborhood residents and students in and around Ogden High School may wonder why it sounds like a jet has been taking off over the past couple of weeks — but it’s just a little engineering being put to good use.

Students in Roger Snow’s principles of engineering class are getting hands-on experience using recyclable energy by creating biodiesel fuel and then running it through a small jet engine.

NEW YORK — President Barack Obama used his weekly radio and Internet address Saturday to tout fuel-efficient technology as one way to reduce energy costs and the nation’s dependence on foreign oil.

NEW PORT RICHEY, Fla. -- It was the exhaust fumes from a diesel truck that inspired Dean Tsoupeis. He was stopped at a red light, directly behind a big diesel truck. As noxious exhaust fumes wafted through the vents of his broken air conditioner, he thought, "There's got to be a better way than this."

Today Tsoupeis, 40, a graduate of Northeast High School in St. Petersburg, Fla., credits that unpleasant experience, along with his admiration for the cooking-oil fueled Veggie Van, with providing the inspiration to grow algae as a way to help liberate the world from its dependence on fossil fuel and head off a worldwide food shortage.

WASHINGTON -- The White House has reached out to automakers, asking them to plan for a ceremony Friday to announce a deal over fuel-economy standards for 2017 to 2025, say two sources familiar with the discussions.