For our latest video I joined Dr John Moses and his research team on an unusual expedition.
It was a trek up the highest mountain in Wales - Snowdon.
At the (rather wet) summit, the team pitched a small tent and made the famous anti-cancer drug Cisplatinum.
I know Snowdon (at just over 1000 metres) is not Mt Everest.
But this was certainly one of the more demanding films I've made on The Periodic Table of Videos - both phsyically and technically, with most of the filming done in rain and clouds.
The team was trying to publicise chemistry and raise money for anti-cancer research.
So if you fancy making a small donation, visit their charity page and please give.
And here are some photos from the trip posted to our Flickr pages.
PS: I will let everyone know when I have regained the ability to walk.