Pros and Cons of Eight Green Fuels

US News dossiers fuels are overrated - and which could power your next car.

Published: 12-Jan-2008

After years of talk, rising oil prices—combined with global-warming concerns and a disdain for foreign oil—have finally set the stage for breakthroughs in alternative fuels. To see how the hottest new technologies stack up, click on each fuel for a rundown of its attributes and flaws, or click on the topics on the left to see how various fuels compare:

Corn Ethanol
A fuel derived from the sugars in corn and other plants. Pure ethanol is usually blended with gasoline. "E10"—10 percent ethanol—is common today. E85—85 percent ethanol—is the highest practical blend; some gas is still required for combustion in most climates.

Cellulosic Ethanol
A biofuel refined from cellulose, the fibrous material that makes up most of the plant matter in wheat, switch grass, corn stalks, rice straw, and even wood chips.


The PAS series, which includes six different bikes, will have its official launch next month in Japan. Prices will start at US$800 to US$990.

The bikes will make their debut appearance in Ed's new comedy TV show, 'Living with Ed' which broadcasts Sundays at 10pm ET/PT on HGTV.

The scooters top out at a 25mph speed, although the ones on loan to the Sheriff's Department are calibrated to travel no faster than 18mph.


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