Antarctica’s ‘Thwaites Glacier’ which is a thousand miles from the nearest research base, has been investigated by scientists from the British Antarctic Survey. The glacier is melting rapidly due to warmer water entering the glacier via huge oceanic channels 600 meters below the surface. This glacier, roughly the size of Great Britain, already accounts for 4 per cent of world sea level rise each year. The accelerating meltdown of the most vulnerable glacier in Antarctica would add over 25 inches to global sea levels - inundating coastal areas and cities such as London and New York.