In May a huge iceberg broke off from an Antarctic ice shelf, drifted, and came to a stop - right in front of “maybe the world’s unluckiest” penguins.

Like a door shutting, the iceberg's huge walls sealed off the Halley Bay colony from the sea.

It seemed to spell the end for hundreds of newly-hatched fluffy chicks whose mothers, out hunting for food, may no longer have been able to reach them.

Then, a few weeks ago, the iceberg shifted and got on the move again.

Some bittersweet news, with an important reminder of how much more precarious life is for creatures living on the Earth's poles due to the changing climate.