Scientists connected recession of number of polar bears with greenhouse gases

The American scientists showed that recession of number of polar bears is connected with the emissions of greenhouse gases which are carried out by the industrial enterprises. New data will help to protect better than these animals. Results of work are published in the Science magazine. In 2008 scientists drew a conclusion that to the middle of the century more than 67% of polar bears in the world will disappear. Because of it polar bears became the first animals whom placed under protection of the American Law on preservation of endangered species of animals and birds because of the global warming caused by human activity. In the seventh section of this law...