They say three is a magic number. When it comes to temperature, I know this to be true. For a cold-water swimmer, a 3°C change makes a world of difference.The same is true for our planet.

I'm about to swim where I shouldn't be able to, for the second time in my life. All because of ice – or the lack of it.

It's been a tough year. We put our lives on pause while the Covid-19 pandemic ravaged our families and our businesses.It also disrupted our conservation efforts.This week 25 nations and the EU met to discuss creating a series of MPAs (Marine Protected Areas) around Antarctica.