Along with winners past, the 2008 Canada Gairdner International awardees, who include Victor Ambros and Gary Ruvkun, will be speaking at a two-day Minds That Matter symposium at the University of Toronto beginning this Thursday. Ambros' talk is called "MicroRNA pathways in animal development" and Ruvkun's is "The tiny RNA pathways of C. elegans." Other big-name speakers include Sydney Brenner, George Church, Craig Mello, and James Thomson.