Scientists alarmed to discover warm water at "vital point" beneath Antarctica's "doomsday glacier"

The collapse of the 74,000-square-mile Thwaites — which some scientists see as the most vulnerable and significant glacier in the world when it comes to sea-level-rise — could release a mass of water roughly the size of Florida or Great Britain


 Scientists continue to warn that the entire West Antarctic Ice Sheet could collapse within the next 100 years, leading to a sea-level rise of nearly 10 feet and flooding coastlines around the world.