© 2018 lcmt
“Bismuth has long been considered the element with the highest atomic mass that is stable. However, in 2003 it was discovered to be weakly radioactive: its only primordial isotope, bismuth-209, decays via alpha decay with a half life more than a billion times the estimated age of the universe.” From Wikipedia, sourced to Dumé, Belle (23 April 2003). “Bismuth breaks half-life record for alpha decay”. Physicsworld.
On Sunday, my sister (visiting from LA for a few days) and I went up the coast to look at the elephant seals near the Piedras Blancas lighthouse. She had a couple of new lenses for her smartphone camera she wanted to try out. I wanted to stop at a couple of exceptional places that sold cacti and succulents. The results of our collaboration were excellent: I made two of these photos into the GLP comics for today.