Whatever Happened To The Next Ice Age?

Whatever Happened To The Next Ice Age?

Leonard Nimoy predicted a new Ice Age in 1978. He was an alien, so he should know. How did a new Ice Age turn into Global Warming? I don't doubt that the Earth, over millennia, goes through extinction level events. Remember the dinosaurs? I just think it is pretty arrogant for humans to think we have any control over it.