Last week (January 19), stem cell pioneer Ernest McCulloch died at the age of 84. Together with James Till, McCulloch discovered stem cells in the 1960s. For their work, the pair won the Gairdner Award in 1969 and the Lasker Award in 2005. McCulloch was professor emeritus of the University of Toronto and former Director at the Ontario Cancer Institute at the Princess Margaret Hospital in Toronto. See the news article on UofT’s website for more information.