started realizing, well, you know, all ofof these models woud be an own facace of natural climate v variabilitiesso t they could be showing i increaseses r decreases over a period of observation, but theyey all shoa decrease, and so that's what starts to help implicate greenhouse gases that's forcing the changes that we're seeing today in the ice cover. we can say that about 50%-60% of the loss of sea ice that we're seeing today is a result of greenhouse gases. the other 40%-50% is actually y natural climate variability, so we know both are acting on the system right now. and right now the resesults are about 5 50/50, i think, on what's happening, what we're s seeing todaday. the planet's going to warm by a certain amount a degrees. the sea ice is going to disappear in the summertime. the ice is continue to respond, sea level is going to continue to rise, but when we look at things like, well, where are the precipitation patterns going to change? who's going to get morore rain? who's going to get less rain? ? what's going to happen to the american sououthwest? are e they going to lose their snowfal