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Climate Change

  • Melting Featured Photo Gallery Melting Melting

    Arctic sea ice surpassed all previous records for the lowest absolute minimum summer extent in September 2007. The "stunning record low" of 4.13 million square... More »

  • Gary Braasch: Earth Under Fire Featured Photo Gallery Gary Braasch: Earth Under Fire Gary Braasch: Earth Under Fire

    Gary Braasch is an environmental photographer and writer. He covers natural history and conservation issues for magazines worldwide. In recent years photographs and articles of... More »

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Focus: Impacts of Humans and Their Economy on the Environment Last Updated on 2009-02-27 21:45:49 The National Science Foundation (NSF) has issued a Dear Colleague Letter to the scientific community ". . . encouraging increased research . . . on the links among environment, society and the economy." Image Above: NSF is supporting research on climate change and Earth's environment, society and economy. Credit: Department of Sustainability and Environment, State of Victoria, Australia More »
Climate Change: Pandora's Box? Last Updated on 2009-01-27 00:00:00 On the Nature Blog, 'The Great Beyond', on January 27, 2009, Daniel Cressey wrote No way back from climate change Much like the sins in Pandora’s Box, once carbon dioxide is out, it’s not going away anytime soon. And it has real and quantifiable impacts. In this week’s PNAS, Susan Solomon, of the US National Oceanic and Atmospheric Administration, and her colleagues report that “the climate change that is taking place because of increases in carbon dioxide concentration is largely irreversible for 1,000 years after emissions stop”. See NOAA Press Release More »
Melting Last Updated on 2008-09-16 15:22:48 Arctic sea ice surpassed all previous records for the lowest absolute minimum summer extent in September 2007. The "stunning record low" of 4.13 million square kilometers was recorded by satellite images on September 16, according to the National Snow and Ice Data Center. The previous record, 5.32 million square kilometers, was measured on September 20-21, 2005. The minimum for 2007 is smaller by 1.19 million square kilometers (460,000 square miles) than the previous low.  2007 also saw the extended opening of the Northwest Passage through islands north of Canada for the first time.   See http://nsidc.org More »
Rising Tides Last Updated on 2008-09-16 15:12:07 About The Cover Shot: Erosion along Cape Hatteras North Carolina has been about 12 feet per year in recent years, leaving house after house stranded in the surf, awaiting its destruction. This is due to a combination of rising sea level and stronger storms and hurricanes, effects of increasing warmth in the atmosphere and ocean. Federal insurance guarantees money for rebuilding, and local officials continue to bulldoze sand back onto beaches -- both of which actions actually increase erosion damage, according to scientists. The world is catching up to Gary Braasch. "This was not a very well covered issue when I started six years ago," he says. The issue is global warming, and what Gary started was an ongoing project to document the results of climate change. Gary Braasch is an environmental photographer and writer. He covers natural history and conservation issues for... More »
Economics of climate change Last Updated on 2008-09-16 10:39:35 Concern has grown in recent years over the issue of global climate change. In terms of economic analysis, greenhouse gas emissions, which cause planetary climate changes, represent both an environmental externality and the overuse of a common property resource. The atmosphere is a global commons into which individuals and firms can release pollution. Global pollution creates a “public bad” borne by all — a negative externality with a wide impact. In many countries, environmental protection laws limit the release of local and regional air pollutants. In economic terminology, the negative externalities associated with local and regional pollutants have to some degree been internalized. Few controls exist for carbon dioxide (CO2), the major greenhouse gas, which has no short-term damaging effects at ground level. Atmospheric accumulations of carbon dioxide and other greenhouse... More »