Climate change may have reached the point of no return last month.
CO2 levels in the atmosphere topped 400 parts per million on May 19, for the first time since the Pleistocene era, over 2.5 million years ago. President Barack Obama’s historic speech on climate change today highlights his growing focus on this issue for his second term.
Climate scientists have long regarded that 400 number as the symbolic threshold. One step beyond, and it would be virtually impossible to put the brake on human-generated climate change. The bad news escalated last week when the International Energy Agency reported that global emissions of carbon dioxide rose 1.4 percent in 2012, the largest annual increase on record.
Environmental News Archive



Elevated levels of methane and other stray gases have been found in drinking water near natural gas wells in Pennsylvania's gas-rich Marcellus shale region, according to new research. In the case of methane, concentrations were six times higher in some drinking water found within one kilometer of drilling operations.
An anti-fracking demonstration attracted more than 2,000 activists to the eastern side of the Capitol at midday Monday. Pop singer Natalie Merchant led members of the crowd in a rewritten rendition of Woody Guthrie's "This Land is Your Land."
Much has been made of the recently announced Center for Sustainable Shale Development (CSSD), a Pittsburgh-based partnership between 11 fracking companies and non-profit groups. The CSSD bills itself as a Leadership in Energy and Environmental Design (LEED) for the gas industry, putting forward a set of 15 standards for fracking and certifying drillers that voluntarily comply with those standards.
In February 2010, Tom Jiunta and a small group of residents in northeastern Pennsylvania formed the Gas Drilling Awareness Coalition (GDAC), an environmental organization opposed to hydraulic fracturing in the region. The group sought to appeal to the widest possible audience, and was careful about striking a moderate tone.





























