18/06/2026
A curious one for Clean Air Day. 🌬️
Take a breath. The odds say it contains a molecule that Julius Caesar breathed out as he was being stabbed in 44 BC. Not a figure of speech – about one molecule, in every breath you take.
The maths is stranger than it sounds... but it works. A single breath contains roughly ten thousand billion billion molecules, and 2,000 years is more than enough time for the air to shuffle itself right round the planet. So a trace of Caesar's final moment is now, near enough, everywhere. The same goes for Cleopatra, Shakespeare, our own previous generations, and at least one thoroughly unbothered dinosaur.
Joking aside... there's no "our air" and "their air." It's one shared supply, endlessly recycled, passed lung to lung across centuries and borders. Whatever any of us puts into it, we all get a turn breathing it back.
So we'll carry on making the unglamorous, useful choices including careful planning, biofuels, transport choices, carbon management, etc because air this well-travelled has earned more than a bit of looking after.
Future generations are counting on it.
Happy Clean Air Day. Breathe easy. 🌿