Why is climate change a global problem that needs to be solved

The planet is warming, from North Pole to South Pole. Since 1906, the global average surface temperature has increased by more than 1.6 degrees Fahrenheit (0.9 degrees Celsius) - even more in sensitive polar regions. And the impacts of rising temperatures aren't waiting for some far-flung future-the effects of global warming are appearing right now. The heat is melting glaciers and sea ice, shifting precipitation patterns, and setting animals on the move.