Science Rendezvous event held at campus of University of British Columbia in Vancouver

A child tries to identify some microorganisms with a microscope during the Science Rendezvous event at the campus of University of British Columbia in Vancouver, Canada, May 11, 2019. With over 300 events across 30 cities, the Science Rendezvous is an annual festival held across Canada showcasing the art in science. (Xinhua/Liang Sen)