A scientific study produces what may be alarming news about global warming.
Polar bears have less ice for hunting as temperatures rise.
The authors of the study say, “The world is already past a point of no return for global warming,” that even if human-caused greenhouse gas emissions could be reduced to zero temperatures may continue to rise for centuries. The study published in the British journal, Scientific Reports, says the only way to stop global warming now is to extract enormous amounts of carbon dioxide from the atmosphere. Several other climate scientists are criticizing the study though, and the authors admit their computer model study is small, so they hope others will use bigger ones to explore their discoveries. Carmen Roberts. Fox News