Quote:
Originally Posted by Terry B
We are all exposed to background radiation all the time. I suppose it is what caused the slow DNA damage that increases our cancer risks as we get older and the increasing foetal abnormality rate in older mums.
Still need the wood fire to keep the house warm though.  |
However, it also drives the evolution (to some extent). .
Without the random changes in DNA, there wouldn't be one.. or it would have been (much?) slower..