Greenhouse gas levels hit record in 2010
The amount of greenhouse gases rose faster last year than the average over the past decade, according to the annual Greenhouse Gas Bulletin.

EMISSIONS: Concentrations of the main long-lived greenhouse gases in the atmosphere — carbon dioxide, methane and nitrous oxide — have increased since preindustrial times by 39 percent, 158 percent and 20 percent respectively. (Photo: ZUMA Press)






















