The U.S. Forest Service’s Center for Urban Forest Research has released a guide demonstrating how trees benefit cities in temperate parts of the West such as Southern California, Central Idaho and the Oregon Coast.

Imagine a gigantic, inflatable, sausage-like bag capable of storing 160 million tonnes of CO2 – the equivalent of 2.2 days of current global emissions. Now try to picture that container, measuring up to 100 metres in radius and several kilometres long, resting benignly on the seabed more than 3 kilometres below the ocean’s surface.

Now that scientists have reached a consensus that carbon dioxide emissions from human activities are the major cause of global warming, the next question is:

If carbon dioxide emissions from the burning of fossil fuels continue on a "business-as-usual" trajectory, humans will have added about 5 trillion metric tons of carbon to the atmosphere by the year 2400. A similarly massive release of carbon accompanied an extreme period of global warming 55 million years ago known as the Paleocene-Eocene Thermal Maximum (PETM).

Researchers at the Georgia Institute of Technology have developed a strategy to capture, store and eventually recycle carbon from vehicles to prevent the pollutant from finding its way from a car tailpipe into the atmosphere. Georgia Tech researchers envision a zero emission car, and a transportation system completely free of fossil fuels.

Nokia has joined the WWF Climate Savers program with a pledge to build on its strong environmental record by improving energy efficiency and reducing carbon dioxide emissions across its business.

Do those fall colors seem to show up later and later—if at all? Scientists say we can blame increasing amounts of carbon dioxide in the atmosphere for prolonging the growing season of the trees. And that may actually be good news for forestry industries.

A Stanford scientist has spelled out for the first time the direct links between increased levels of carbon dioxide in the atmosphere and increases in human mortality, using a state-of-the-art computer model of the atmosphere that incorporates scores of physical and chemical environmental processes.

Imagine you are walking in a forest and can actually feel or hear trees, shrubs, and even soil breathing. As the sun shines in the daytime, you sense a huge whoosh as plants breathe in and a long sigh as they exhale carbon dioxide.

STORING carbon dioxide deep below the earth’s surface could be a safe, long-term solution to one of the planet’s major contributors to climate change.

The U.N. weather agency reported that greenhouse gases in the atmosphere in 2006 were higher than ever. Carbon dioxide is now contributing more to global warming.

U.S. greenhouse gas emissions could grow more quickly in the next 50 years than in the previous half-century, and technological change may cause increased emissions rather than control them, according to a new study by an MIT economist and his colleague.