Can cri­sis tip us into an eco­log­i­cal­ly sane civ­i­liza­tion? UK Think­tank report author Lau­rie Lay­bourn on a future where dis­as­ters rip­ple across the world. Then lets get away — to Antarc­ti­ca. Why did sea ice crash around that frozen con­ti­nent? And increas­ing El Niño events may dri­ve glob­al sea lev­els high­er? Aus­tralian sci­en­tist Adri­aan Purich shares big changes at the South Pole.