...Over all, global emissions jumped 3 percent in 2011 and are expected to jump 2.6 percent in 2012, researchers reported in two papers released by scientific journals on Sunday. It has become routine to set new emissions records each year, although the global economic crisis led to a brief decline in 2009.
The level of carbon dioxide, the most important heat-trapping gas in the atmosphere, has increased about 41 percent since the beginning of the Industrial Revolution, and scientists fear it could double or triple before emissions are brought under control. The temperature of the planet has already increased about 1.5 degrees Fahrenheit since 1850.
Further increases in carbon dioxide are likely to have a profound effect on climate, scientists say, leading to higher seas and greater coastal flooding, more intense weather disasters like droughts and heat waves, and an extreme acidification of the ocean. Many experts believe the effects are already being seen, but they are projected to worsen...