"Massive 'Megaberg' Breaks Free: Implications for Rising Sea Levels"

Incredible footage captured by the British Antarctic Survey shows the world's largest iceberg, A23a, beginning its journey into the Southern Ocean after being stuck to the ocean floor for 30 years. The iceberg is over twice the size of Greater London and 1,312 feet thick. It is expected to be swept along by the Antarctic Circumpolar Current towards "iceberg alley" and the sub-Antarctic island of South Georgia. Researchers aboard the RRS Sir David Attenborough also took samples from the iceberg to study its impact on the Southern Ocean and its ecosystems, hoping to gain insights into the effects of climate change.