Why the Polar Bear is Facing Extinction



Image: flickrfavorites

Those who doubt global warming say that we are seeing natural warming and cooling trends and that at the moment we are just in a warming trend. Yes, there are warming trends here on Earth, but not anything like we have seen in the last decade. And now our continuing denial of global warming could cost the polar bear its existence.


Image: Ansgar Walk

Scientists have worked in the polar and arctic regions, taking ice core samples from deep within the snow and ice on the North Pole. There, they have discovered carbon dioxide levels that have never been seen before. In the last 10,000 years, CO2 levels have reached 300 parts per million, and in the last few decades they have exceeded that range. This proves the Earth has more carbon dioxide in the atmosphere than ever before. These results show that the Earth’s atmosphere is getting thicker and not allowing as much heat from the Sun to be released back into space. Greenhouse gases are retaining heat and raising the Earth’s temperature.

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