Ever heard of a hydra? Somewhere in the back of my mind I remembered studying this in biology. Hydra’s were always interesting because you could multiply them quite easily. All that was soon forgotten but has been resurrected for me in a most curious manner. The tiny hydra doesn’t seem to have a short lifespan as other creatures the same size and science has discovered why. The why is very curious in its ramifications for future use. Take a look at this very cute, easy to understand video (show your kids) to see what I mean.