I think it mostly comes down to trying to align with people who are down with a mission and will bring optimism.

Pretty much everywhere we went we had crazy weather. I think Russia was probably one of the toughest places for us weatherwise, but even Alaska, the last three years have been somewhat subpar when you look at historically how Alaska can shape up.

While researching the project [The Fourth Phase] I stumbled across this amazing research by a scientist called Dr Gerard Pollack who had done studies on what he called a 'fourth phase' of water.

One of the proudest things for me with this film [The Fourth Phase] is that year after year we put ourselves right out there making it and no one got seriously injured.

Apart from those other riders there is a whole production team [ of The Fourth Phase] behind the cameras too, hauling hundreds of kilos of fragile and awkward filming equipment up those same frozen landscapes. They're the real heroes.

There's no doubt 'normal' is changing - spring actually came a month early in Alaska, for example, and we had to stop filming.

I was picking up surfing, which I also fell in love with. Then I was like, man, to combine the two [free ride and surfing ] would be perfect.