TLDR? Adenosine Triphosphate.
A sobering reflection on life, the Universe and everything from the always fascinating German education design studio, Kurzgesagt. To wit:
Picture yourself as a slinky falling down an escalator moving upwards – the falling part represents the self replicating processes of your cells, the escalator represents the laws of physics, driving you forwards. To be alive is to be in motion but never arriving anywhere. If you reach the top of the escalator there is no more falling possible and you are dead forever.
Previously: Coronavirus Explained