The next ice is likely something like 23,000 years way. The last one was about 21,000 years ago. Here's a simple time line that might help you understand how and when the climate changed in the past.
They seem to talk about the change, but never any time tables. I mean, is the next ice age in 50 years? 150? Is it to late to do anything (as if everyone would do anything) and isn't the earth supposed to go through these climate shifts?
