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In the article published in Science Daily entitled “Extreme melt season lead to decade-long ecosystem change in Antarctic polar desert”, a group of researchers from the University of Colorado at Boulders found that during the very hot summer of 2002, the McMurdo Dry Valley in Antarctica endured rough changes in its ecosystem that would have an impact for the years to follow. The team believes that this event proved that even small appearing weather events can have impacts on a region for a very long time.

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In his article “How disappearing sea ice has put Arctic ecosystem under threat”, Robin McKie warns that over two million square kilometres of midwinter sea ice have melted in less than forty years. Global warming, caused by excessive carbon emissions from cars and factories, is the main cause of sea ice loss. This deterioration of the Arctic natural ecosystem is seriously endangering many species like seals, fish, polar bears, foxes, and wolves since according to the marine ecologist Tom Brown, the Arctic food chain depends on a stable sea ice platform to survive.

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This article by “the American Institute of Biological Sciences”, talks about how water is becoming a scarce resource. As humans, we use a lot of water, to bathe, wash clothes and dishes, for production of food. Etc. However, even though water is considered to be a renewable resource because of rainfall, our over use of its availability leads to water shortages. This article stresses that the high demand for water can threaten biodiversity as well as basic human needs such as food production and drinking clean water.

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