19 Jul 2012:
`Great Green Fleet’ Trial
Launched by U.S. Navy in the Pacific
The U.S. Navy this week held military exercises in the Pacific Ocean that used an expensive blend of biofuels and conventional fuels to power 71 aircraft and three warships,
part of an ongoing effort by the Navy to develop alternative fuels for its global operations. The so-called “Great Green Fleet” initiative is a top priority of Navy Secretary Ray Maybus, who contends that the U.S. military must eventually free itself from dependence on fossil fuels “because unpredictable and increasingly volatile oil prices could have a direct impact on readiness.” But numerous critics, including U.S. Senator John McCain, criticize Maybus’ initiative as unnecessary and costly, noting that the 50-50 biofuel/conventional fuel blend costs $26 a gallon — more than six times the cost of conventional fuels. A Defense Department study said that the military will spend $2 billion more annually if it continues to pursue its biofuels experiments. About 90 percent of the biofuels was rendered from cooking oil waste and the remaining 10 percent was refined from algae. Maybus, speaking aboard the aircraft carrier USS Nimitz, contended that the rising costs of oil and breakthroughs in biofuel production will eventually narrow the price gap between conventional and alternative fuels.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
Watch the video.
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.