david wallsten has been. visiting antarctica for more than fifty years and as the expedition chief scientist. because the antarctic and the southern ocean actually influence the whole of the global weather system and all the currents in the oceans it matters to everybody it also matters if they aren't all begins to melt as far as world sea level is concerned it's a larger source of new war frighted to the oceans in the world so even if you live somewhere a long way away if you're low lying on the coast the antarctic matters to you. the voyage will take us two and a half thousand kilometers south from hobart to the edge of antarctica will then travel five thousand kilometers east making stops at a number of islands. then after a month say you will return to port in southern chile. the first we must cross what are known as the furious fifty's in screaming sixty's latitudes nine for they ferocious with. we face hundred kilometer hour winds and ten meter away. it's a nearly reminder of the potent energy of the oc