. >> nicholas metz is a professor of geo science at hobart and william smith colleges in geneva new york tell my students to imagine a balanced top of the moucht an. a push and that ball goes to the bottom of the moucht an. this is just the mountain flipped upsidedown, just a little push it produces lake-effect snow bands. >> it sounds like weather is becoming extreme? >> a lot of the research is show showing that as our globe starts to change, extremes may become the norm. >> so does science suggest that more? >> i think that's a reasonable seeing. >> when it's extreme weather like buffalo's due to climate change and when is it just plain wild weather? a new and growing scientific field that tries to access whether climate change played a role. the extreme heat fueling fire fires since 2013. is it climate change? according to the research published in the bullet of the american meteorological society, probably yes. >> what about the torrent be rains that hit the united kingdom in the winter of 2014? climate change or just wild weather? a study of oxford university found that that event