Doctor Who, and the Doctor Who: Adventures In Time And Space roleplaying game. By Craig Oxbrow.
Thursday, 7 July 2016
A Google Doodle for the 155th birthday of Nettie Stevens, pioneering geneticist who found the X and Y chromosomes. “Before Stevens’ work, scientists thought that the mother or the environment determined if a child was born male or female.” Which allowed Henry VIII to get away with dumping wives for giving him daughters, for example.