The Thwaites glacier, also known as the Doomsday glacier, is a massive glacier in Antarctica, larger than the state of Florida.
It has been attributed the nickname "Doomsday" due to its high risk of significantly raising sea levels.
The glacier is so huge, it could cause global flooding when it melts.
Researchers and scientists are closely monitoring the glacier's movement and retreat.
Author's summary: Massive Antarctic glacier poses threat to global sea levels.