It isn't good. It's the Earth's way to try and recover from rises in CO2 levels. Some areas will dry out. Others will get more green. Green areas will probably advance more north, which isn't good, per se, because there goes the permafrost, tundra, and polar regions. A fairly credible theory predicts that if the North Pole melted completely, the Gulf Stream would die, plunging Europe into permanent Arctic temperatures, and we'd have to wait another few thousand years for the Ice Age to end.
Melon