What is global warming?
February 9, 2009, 11:21 a.m.
The burning of fossil fuels, such as coal and oil, and deforestation have caused the concentrations of heat-trapping "greenhouse gases" to increase significantly in our atmosphere. Learn more about science and issues related to global warming.
What are carbon emissions ?
February 9, 2009, 11:16 a.m.
In the U.S., energy-related activities account for three-quarters of human-generated greenhouse gas emissions, mostly in the form of carbon dioxide emissions from burning fossil fuels.
What is cap and trade?
February 9, 2009, 11:11 a.m.
Cap and Trade is a market-based policy tool for protecting human health and the environment. Learn more.
MNN's week in review 2/6/2009
February 6, 2009, 11:12 a.m.
Here's our compilation of the don't-miss stories from this week.
Protect the environment: In your community
February 5, 2009, 5:46 p.m.
Celebrating Earth Day in your community
Green building: Why do we keep building on the beach?
January 12, 2009, 5:13 a.m. by Adrianne Stone
A former Californian ponders our desire to live dangerously near the sea.
Top 10 green books of 2008
January 7, 2009, 12:08 p.m.
Resolve to be greener by reading the year's best environmental books.
Internet revolution that elected Obama could save Earth
November 14, 2008, 2:45 p.m.
Al Gore thinks the Obama Internet revolution could save the planet.