US Greenhouse Gas Emissions Slightly Decreased in 2012 Climate change is making the news for a number of reasons, including Showtime’s new series called "Years of Living Dangerously." The rise in greenhouse gas emissions is responsible for climate change, and the majority of scientists agree that most of the increase is caused by human activity. That said, there is a bit of good news when it comes to U.S. GHG emissions. The Los Angeles Times reports that greenhouse gas emissions in the U.S. decreased by 3.4 percent from 2011 to 2012. The report is based on the EPA's recently released inventory, which cites "multiple factors" for the decrease in emissions — including reduced emissions from electricity generation, fuel efficiency in vehicles, a decrease in the price of natural gas and reductions in miles traveled.
Greenland was green Greenland the second largest body of ice on Earth was actually green at one point in history. Researchers, including a scientist from Lawrence Livermore National Laboratory, have unearthed cryogenically frozen ancient dirt previously buried under nearly two miles of ice.
Saving money with wasted heat Nearly two-thirds of energy input is lost as waste heat. Now Northwestern University scientists have discovered a surprising material that is the best in the world at converting waste heat to useful electricity. This outstanding property could be exploited in solid-state thermoelectric devices in a variety of industries, with potentially enormous energy savings.
Scenario development yields environmental success story With so much scenario modeling currently available, we are able to better predict our future and anticipate the outcomes of various habits and activities. While invaluable in the area of prediction, how has that information transformed our environmental status? Is our environmental future optimistic or dismal? Will we be able to celebrate Earth Day in the future knowing that we have responded appropriately to the bleak prophecies?
Climate Change Reshaping Urban Tree Populations Despite protecting us from the impacts of a changing climate, our region's trees are also threatened by wetter and warmer weather. The urban forests of today will look much different by the end of the century. By the end of this century, scientists predict southern New England's seas will rise some 3 feet, and without major cuts to greenhouse gas emissions, they say summers here will soon resemble Georgia's dog days.