dave searle is claiming an ice face high in the alps. like, super exciting, and there's so much happening and going on. his safety depends on the strength of the ice. you're listening for a good thunk, and making sure that the ice axe isn't wobbly. but the ice in the high mountains of europe and the world is changing. for me, it's been quite shocking how fast it's been developing. the winters are just much more mild. we're getting rain higher up the mountain. the greenhouse gases emitted since the industrial revolution have already raised global temperatures by a little overi degree, but the effects are even greater in the alps. the temperature up here is rising by about twice the global average. it has already increased by 2 celsius, and it is having a devastating effect on the snow and ice up here. at an observatory 3.5 km up this swiss mountain, they've been monitoring the changing alpine climate for decades. 30 years ago, it never rained, but nowadays in summer, very often, there is rain, even up here at 3500 metres. wow. yep. last y