The melting of Antarctica's sea ice has had severe consequences for the Southern Ocean already, from the loss of its habitats to the increase of its sea levels to the intensification of its storms and severe weather. But it turns out that things can always take a turn for the worse.

A sudden salinity spike in the Southern Ocean is accelerating Antarctic ice loss and triggering a dangerous climate feedback loop.

Most people will never see Antarctic sea ice up close, but its presence or absence affects our day-to-day lives.Now scientists are questioning whether