Scientists plan mission to biggest iceberg as it drifts towards island

Team will study effects on environment of A-68A, which is heading for South Georgia

Scientists are preparing for an urgent mission to the world's biggest iceberg, which is on a collision course with the island of South Georgia in the southern Atlantic Ocean.

The A-68A iceberg, which is larger than Luxembourg, broke off from the Larsen C ice shelf in Antarctica in 2017 and has been drifting towards the island ever since.