“As I listen, astounded, I think about how far this conversation is travelling on a frequency where the length of one wave is 160 metres. Did it circle the Earth? How many times?”

Planetary Radio

A-68A calved from the Larsen C ice shelf in Antarctica in 2017. A chunk of ice more than twice the size of Luxembourg, the iceberg drifted slowly through the Weddell Sea before emerging into the open ocean of the South Atlantic. By late November 2020, satellite images suggested A-68A was on a collision course with the island of South Georgia. Mirroring the island in both shape and size, the iceberg threatened to ground in the waters off the coast, forming a colossal obstacle to the migration of penguins and other sea life.


Authored by Sasha Engelmann