Innovation Expo held as part of Globe Forum 2018 in Vancouver, Canada

A visitor takes a look at a water purification equipment at the Innovation Expo in Vancouver, Canada, March 15, 2018. As a part of Globe Forum 2018, the Innovation Expo attracts 200 clean tech companies from around the world to showcase their latest clean technologies and products. Globe Forum is North America's longest running sustainable business event. (Xinhua/Liang Sen)