03 Oct 2012:
Major Policy Shifts Needed
To Maintain Decline in U.S. CO2 Emissions
A decline in U.S. carbon emissions in recent years is unlikely to continue over the long term
unless there is a significant shift in how the nation produces and uses its energy, according to a new analysis. While several factors have triggered a 9 percent decline in annual carbon emissions in the U.S. since 2005 — including a decrease in the use of coal-fired electricity as a result of the natural gas boom — the most significant factor has been the economic recession, according to the group Climate Central. As the economy recovers, any reductions in greenhouse gas emissions will likely be offset by increased incomes that drive an greater demand for vehicles, electrical appliances, and other consumer products.
calculates that U.S. carbon emissions can be reduced 38 percent below 2005 levels by 2035 if several hypothetical changes occur. These include the number of miles driven remaining at today’s level and average vehicles achieving fuel efficiency of 55 miles-per-gallon; significant gains being made in the efficiency of energy-consuming equipment; natural gas continuing to reduce the share of coal-burning technologies; coal-burning systems being equipped with carbon-capture systems; or renewable energy replacing coal altogether.
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.