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Vast amounts of natural gas contained in crude escaping from the blown well could pose a serious threat to marine life by creating "dead zones" where oxygen is so depleted that nothing lives. The danger presented by the methane has been largely overlooked, with early efforts to monitor the oil spill focusing on the more toxic components of oil. But scientists are increasingly worried about the gas that can suffocate sea creatures in high concentrations. At least 4.5 billion cubic feet of natural gas — and possibly almost twice that amount — have leaked since April 20. That's based on estimates from the U.S. Geological Survey's "flow team" that 2,900 cubic feet of natural gas are escaping for every barrel of oil.(AP)




Scientists have supported the idea that melting ice sheets leads to earthquakes. It seems large, stable ice sheets hold tectonic plates in place, preventing their movement and the associated earthquakes. As ice sheets melt at an ever faster rate, we can expect to see global increases in earthquake activity.

 


According to a 2006 report by the United Nations Food and Agriculture Organization (FAO), our diets and, specifically, the meat in them cause more greenhouse gases carbon dioxide (CO2), methane, nitrous oxide, and the like to spew into the atmosphere than either transportation or industry. Greenhouse gases trap solar energy, thereby warming the earth's surface. Because gases vary in greenhouse potency, every greenhouse gas is usually expressed as an amount of CO2 with the same global-warming potential.

 


BARCELONA, SPAIN (November 6, 2009) Scientists and NGOs: Deforestation and Degradation Responsible for Approximately 15 Percent of Global Warming Emissions. A new study has suggested that carbon dioxide (CO2) emissions from deforestation in the Amazon are increasing as loggers and land developers move deeper into dense regions of the forest. The results underscore the danger posed by deforestation, which is responsible for upward to 20 percent of global carbon emissions.

 


A study carried out by meteorological scientists has found that the ongoing Australian drought is primarily being caused by global warming, and goes on to suggest that ratification of the Kyoto Protocol would be a possible course of action.

 


Glacial retreat since 1850 has been worldwide and rapid, affecting the availability of fresh water for irrigation and domestic use, mountain recreation, animals and plants. These all depend on glacier-melt, and in the longer term and to some extent so does the level of the oceans.

 


If Greenland's ice melts at moderate to high rates, ocean circulation by 2100 may shift and cause sea levels off the northeast coast of North America to rise by about 12 to 20 inches (about 30 to 50 centimeters) more than in other coastal areas.

 


Almost 100% of the observed temperature increase over the last 50 years has been due to the increase in the atmosphere of greenhouse gas concentrations like water vapour, carbon dioxide (CO2), methane (a new study by the Nasa Goddard Institute for Space Studies has found methane is 33 times more damaging if the effects of interaction with other airborne pollutants is included) and ozone. Greenhouse gases are those gases that contribute to the greenhouse effect. The largest contributing source of greenhouse gas is the burning of fossil fuels leading to the emission of carbon dioxide.

 


The massive floods that inundated the Philippines capital were a chilling reminder of the need to seriously address climate change, experts said, warning that the lives of millions were at stake.