um. no. ice ages are caused, generally, by a change in the tilt of the axis of the earth. And we have evidence of several ice ages occuring during earth's history. How many chances is god gonna give us? (assuming you're thinking that ice age is the destruction of the earth, i'm not really positive what you're saying though, mind clarifying?)
and in all reality, a high speed pitch at the world series is insignificant. It can top what, 130 mph? that baseball has very little impact in the great scheme of things. try throwing something the size of a city at more than 20,000 mph to get some real effect on the earth (and even that's gonna be small compared to supernovas).
anywho, welcome to EvC.