Interestingly, the cold is not the only unusual phenomenon that is happening in some parts of the planet, there are also historical heat temperatures in Alaska and Russia, and droughts in much of western U.S. This is the science behind it. Some people do not care about climate change because they believe that it is not something that directly affects their lives, but the truth is that it can not have important negative effects on public health, working conditions and occupational hazards of different groups of people. Experts but that does not have to affect everyone, for example if you want to find a dentists in Mexico do not worry, they are doing things well despite global warming.
Many people seem to conclude that the Earth is not getting warmer because this winter is very cold above normal. The cold is not the only abnormal pattern for North America. There are also historic heat temperatures in Alaska, and the largest drought in decades along the West.
The general idea of ??what is going on, which some call the Polar Vortex, is that sometimes the jet stream (strong concentrated air stream) slows down and turns south, allowing a very cold Arctic air to fall on the surface. most of Canada and EU This is a regional phenomenon that most of all brings the hot air of the planet to unusual places, instead of, in effect, cooling it down.
Evidence of this is that while many parts of North America are colder than usual, the hot air that is being pushed to the sides is changing the climate in opposite directions in places like Alaska and Washington State, like Russia and some parts of Europe.
Observing the graphs of the jet stream helps a lot to understand the phenomenon that we are experiencing in 2014. The unusual cold, then, is part of global warming, and an important part of it.
Extreme heat and climate change in Iran
The last 30 years have been terrible for the inhabitants of the province of Kerman, in Iran. A region that was once rich thanks to the cultivation of palm and where water had not been scarce, gradually became a desert due to the scarcity of water and poor cultivation practices.
There are several reasons for the ruin of Kermán: the drought was caused by a lack of extreme rainfall, which dried the wells and ended with palm and pistachio crops; the farmers used chemicals in the crops, which aggravated the erosion of the land and failed to recover the production or exports of the past, and cattle ranching became unsustainable. Since then, more than 20,000 hectares of crops have become desert.
Global warming only accelerated the harsh conditions of its inhabitants, many of whom have tried to make illegal water intakes, which is punishable by the Iranian government. Given this, the UN has declared Iran as a “water scarcity” zone.