World’s biggest iceberg breaks up after 40 years: ‘Most don’t make it this far’

Megaberg' known as A23a has rapidly disintegrated in warmer warmers and could disappear within weeks

Nearly 40 years after breaking off Antarctica, a colossal iceberg ranked among the oldest and largest ever recorded is finally crumbling apart in warmer waters, and could disappear within weeks.

Earlier this year, the megaberg" known as A23a weighed a little under a trillion tonnes and was more than twice the size of Greater London, a behemoth unrivalled at the time.