What a year! I’ve put together some of my top pics from 2021, from Greenland to Glasgow. Enjoy 🇬🇱👇🏴󠁧󠁢󠁳󠁣󠁴󠁿

They say hindsight is 2020. When we look back on the COP26 Climate Conference in Glasgow, what will we remember?Sometimes numbers tell a story better than words or images can. The post-COP number that stands out for me is 2°C.At 2°C above pre-industrial temperatures we lose 99% of our coral reefs.

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.

I didn't realise the world contained so many different shades of blue. I was surrounded by ice, with the light refracting back at me from every side. I've never been more dazzled. I was in East Antarctica, I was underneath the ice sheet, and I was swimming. It wasn't exactly what I had planned.