Friday, February 8, 2008 - Page updated at 02:37 p.m.
Take the challenge to fight global warming
Scientists say the Earth is getting warmer and that humans are at least partly to blame. But each of us can be part of the solution. That's why we asked readers to join a monthlong challenge in May, 2007 to reduce their individual greenhouse gas emissions by at least 15 percent.
Calculate your household carbon emissions.
Seattle Times Special
Miracle Machines: The 21st-Century Snake Oil
The Favor Factory
Pike Place Market
Your Courts, Their Secrets
License to Harm
The Bering Sea
Olympic Sculpture Park
DEAN RUTZ / THE SEATTLE TIMES
Climate Challenge: Can we change our lives to save the planet?
Take the climate quiz!
Each week of the challenge in May, we'll have a new quiz to test your climate knowledge.
U.S. carbon-dioxide emissions dropped slightly last year, even though the economy grew, the Energy Information Administration said this month.
The 1.3 percent estimated drop in carbon-dioxide emissions marks the first time the greenhouse gas in the U.S. has declined since 2001 and the first time since 1990 that it has gone down while the economy was thriving, The Washington Post reported.
Carbon-dioxide emissions declined in both 2001 and 1991, in large part because of economic slowdowns during those years.
The government said several factors helped reduce emissions last year, including weather conditions that reduced heating and air-conditioning use, higher gas prices that cut consumer demand at the pump, and a greater reliance on natural gas. Read the report: www.eia.doe.gov/oiaf/1605/flash/flash.html
Want to learn more? Check out our tip page.