I was there with a team from The University of Nottingham, including the vice-chancellor David Greenaway (he's the university's top boss, standing next to me in this pic).
The team of 11 cyclists (and four support crew) are journeying from John o'Groats to Britain's other famous geographical extreme, Land's End.
They're doing it for the challenge - and to raise money for palliative care.
So why not do a good deed and sponsor the ride. It's for a very good cause.
Yesterday I asked our Facebook followers what molecules we should be covering.
Here are some of their answers so far:
- The contraceptive pill. Something that radically changed the lives of women for the better, but also whether it's true the hormones getting into waterways are changing the sex of aquatic life.
- Serotonin!
- Mercury(II) thiocyanate decomposition, I've seen it on YT already, but some explainations of the molecular video experts would be cool.
- Something on other classic molecules, but pharma-oriented are my favourites!
- Nitric acid!
- Perhaps something that's got to do with the oxidation states of actinides, they never really taught me that at school.
- Noble gases compounds?
- How about DNA?
- Ethene (most produced chemical product in the world) or steam (for industrial boilers etc).
- Something pretty like Carborane.
- H2O... come on now.
- What about the chemistry of brewing and fermentation processes of beer and wine?
- And something about Glass, PVC, how they're produced.. it would be cool.
- Maybe sodium chloride?
- Mercury Fulminate ! ! ! :D Or thermite :)
- Yes mercury fulminate. As featured in the tv show Breaking Bad.
- Potassium Nitrate. So much history there!!
- How about something like chlorophyll
- I don't believe I have seen CFCs yet.
- Ochratoxin
- Hm...Urea or Chloroform.
- Piranha solution, potassium permanganate or potassium dichromate
- Dissect the lucrative world of toxins, preferably toxic compound used by different intelligence agencies. Scopolamine, ricin, abrin and in general tropanes would be of great interest. But I guess such "lethal" knowledge may not be pertinent for the univeristy to publish now in our turbulent times with all the terrorism.
It's a song by rapper and science communicator Oort Kuiper (aka Jon Chase) - but using some of our own video clips.
Check it out:
Also, I sent a message to the 50,000th subscriber - and heard back from him.
Initially he thought my message was a hoax (I don't blame him with the amount of spam flying around YouTube!)
The chap - who would prefer to remain nameless - is originally from the town of Zadar in Croatia.
He wrote: "I had no idea this was going to be the 50,000th subscription, and I wanted to subscribe long time ago, but never really cared about the whole concept of subscription because I periodically watch the channels I like, like periodicvideos.
"Though I'm not too active on Youtube cause there's not much time for making the videos I'd like, it's been more than 5 years that I run a blog (endimion17.blog.hr), mainly discussing pseudoscience from a healthy critical thinking point of view, presenting the local web population with some cool things from amateur astronomy and chemistry, and occasionally a rant or two on criminal."
I can't vouch for the blog as I don't understand the language, but here it is.
Our mysterious number 50,000 also had plenty of suggestions for future videos.
He wrote: "It would be great to make few videos of really rare sights, like solid oxygen, solid and liquid ozone (yeah, I know it's dangerous), glowing of condensed radon, the glow of metallic radium, etc.
"We've all been reading about stuff like that from the textbooks, but there are no photos or videos around."
Actually, I was alerted to it by Professor Poliakoff who emailed me from his holiday (is he ever really on holiday!!?).
His email said: "Have arrived safely at the hotel. En route, we heard the story on Radio 4 (PM programme) of the Swedish guy who tried to boil americium, radium and another radioactive element in sulfuric acid on his kitchen stove! I thought that you might be able to get Steve Liddle to do a short video about it?"
Steve (an expert on uranium) agreed, and here's the quick video we did:
Today I had a glorious insight into the joys - and speed - of social media.
Basically I needed a photo of a fire extinguisher to use in one of my videos (this one, if you're curious).
I needed it quickly.
So, like I sometimes do, I asked my friends on Twitter and Facebook to help.
Within SECONDS I had a phone call from my former BBC colleague - @QuentinRayner
"I'm just taking one now on my phone, what email address shall I send it to," he said, standing in the BBC newsroom.
A few seconds later - and BEFORE Quentin's picture arrived - this photo appeared on Facebook:
It's a photo of Quentin taking the picture, posted by another of my former colleagues.
Sure enough, Quentin's picture arrived a minute later!
I'd barely caught my breath.
Many thanks to other people who also sent photos (including @georgeerice and @jbwan) - I appreciated it.
Surely the best picture - which I was unable to use for reasons which may be apparent - was this one from prolific blogger and bird enthusiast @grrlscientist
More importantly, it explains the active ingredient in many inhalers (Salbutamol) and how it works.
I asked viewers to contribute pictures of their inhalers to use in the video... I only used one, but thought I'd use the blog here to share the others.
I usually appeal for viewer pictures via Twitter and Facebook - so follow us there!
An interesting piece of trivia about this final one...
I asked the sender (Pat) why the background periodic table was back-to-front.
Pat replied: "That's just a matter of laziness, haha. I have a mirror on my wall, and I just look at that instead of turning around."
Blog goes behind the scenes with video journalist Brady Haran.
Brady's working on various projects, including the successful Periodic Table of Videos, Sixty Symbols and Numberphile.