U.S. Department of Energy | Active Lifestyles NW

Environment

How far along are we at developing algae-based and other higher yield sources of biofuels?

Dear EarthTalk: How far along are we at developing algae-based and other higher yield sources of biofuels? — Jason McCabe, Tullahoma, TN A few years ago biofuels were all the rage. Environmental advocates to national security hawks alike were extolling the virtues of ethanol and biodiesel as a carbon-neutral bridge to our energy future. But […]

Environment

Greening Package Delivery Fleets

Dear EarthTalk: Now that hot weather is coming, I want to upgrade my home’s A/C. Which are the most energy-saving models and should I go central air or window units? — Jackie Smith, Cary, NC According to the American Council for an Energy Efficient Economy (ACEEE), energy consumption for home air conditioning units accounts […]