dazzling ice against a brilliant blue sky donny arnold and his friend are extreme mountaineers here on a quest for the ultimate thrill. they're climbing the pits polluting a nearly full 1000 meter peak. once legged in pickup position your ice axes on the wind you hear the tension of the east the crests and hisses when it breaks up the ice blocks it's really cool that uses a. buzz an increasing number of scientists a warning that such adventures might soon become impossible global warming is melting the glaziers donny arnold can see for himself the effects of climate change easy to all the days when you could really go climbing and winter in the clip them called 10 years ago he thought there were lots more of the. female. experts say we're at a turning point there's less snow less ice and glaziers are retreating. it won't be long before the alps as we know them no longer exist. i've. stagings day. in spring 2018 the mood in the glazier 3000 ski resort in switzerland was euphoric even among scientists a team led by glazier expert. from the swiss federal institute of technology in zurich