Keen to progress the work on photosynthesis, Lawrence hired Melvin Calvin, a colleague from the Manhattan Project, immediately after the war. The story has it that on the day of the Japanese surrender Lawrence told Calvin that ‘Now is the time to do something useful with radioactive carbon.

It seems that all eukaryotic cells either have, or once had (and then lost) mitochondria. In other words, possession of mitochondria is a sine qua non of the eukaryotic condition