Urine Battery Turns Pee Into Power

Publication: National Geographic News   Date: August 18, 2005   View Article

Before you next flush the toilet, consider this: Scientists in Singapore have developed a battery powered by urine.

Researchers at the Institute of Bioengineering and Nanotechnology created the credit card-size battery as a disposable power source for medical test kits.

Fuel Cell Motorbike to Hit U.S. Streets

Publication: National Geographic News   Date: August 2, 2005   View Article

A sleek, almost silent, nonpolluting fuel cell-powered motorcycle is set to begin gliding down U.S. streets by the end of 2006.

The bike is dubbed the ENV (pronounced “envy”), short for Emissions Neutral Vehicle. The London-based company Intelligent Energy decided to develop the bike itself after years of cool reception to its fuel cell technology from manufacturers.

Beaver Dams Inspire Fish-Friendly Hydropower Design

Publication: National Geographic News   Date: July 15, 2005   View Article

Hydropower—electricity produced by flowing water—is an efficient form of renewable energy, but it often comes at a high cost to the environment and society. Now a technology inspired by beaver dams and airplanes may help eliminate these drawbacks.

Engineers with NatEl America, a Grapevine, Texas-based renewable energy company, have developed a new way to generate electricity using the dimensions of a beaver dam and the physics of fixed-wing aircraft.

Underwater Windmill Helps Power Arctic Village

Publication: National Geographic News   Date: October 9, 2003   View Article

Energy derived from the moon now trickles into a village near the Arctic tip of Norway via a novel underwater windmill-like device powered by the rhythmic slosh of the tides.

The so-called tidal turbine is bolted to the floor of the Kvalsund Channel and was connected to the nearby town of Hammerfest’s power grid on September 20. It is the first time in the world that electricity directly from a tidal current has been fed into a power grid.

Vegetable Oil – The New Fuel?

Publication: National Geographic News   Date: April 22, 2003   View Article

As the world watches the price of crude oil fluctuate in response to the conflict in Iraq, chemists and advocates for alternative energy technologies are training their sights on the grease used to cook French fries.

They say that oils derived from soybeans, corn, and other vegetables hold promise as a cleaner and renewable alternative to the finite resource sucked up from the ground.

© 2008-2010 Collected Writings By John Roach