when it starts to melt we've done a lot of tests on the annual farmyard schmidt's and a moment in tovia snow is melting right now and footprints reproduce a darker pattern on the ground and that includes says the radiation measurements condoms misnomer today he can start by and for those so that i'm not going to replace the device today just he may wait until the snow is completely gone and the . pick of. the over the past few years we've noticed that the thought has been starting earlier lauder's old it can either just keep that's an obvious indication of climate change and we can see it right here come on you. have been working at this research station for nearly 20 years or until now you notice these changes are in the offices that's a major cause for concern it's very sad and wished him. a while ben was getting ready to take some snow samples. the temperature is 3 degrees above freezing that's 10 degrees celsius higher than normal. but why is collecting samples of microorganisms he's wearing special clothing so that he doesn't contaminate the snow this is a key part of the scientist