The world's oldest rocks might be right here in Canada. That's according to research from Quebec's Nuvvuagittuq Greenstone Belt. Jonathan O'Neil, associate professor with the Department of Earth and Environmental Sciences at the University of Ottawa and author of Evidence for Hadean mafic intrusions in the Nuvvuagittuq Greenstone Belt, Canada, joins Evan to share what his team found and what this means for not just geology lovers but the earth.