Highlights of 36th Greater Vancouver Regional Science Fair in Canada

A student introduces his automatic cardiopulmonary resuscitation (CPR) vest prototype at the 36th Greater Vancouver Regional Science Fair in Vancouver, Canada, April 14, 2018. The fair is an annual science competition, of which the top projects will be selected to progress to the Canada-Wide Science Fair to be held in Ottawa in May 2018. (Xinhua/Liang Sen)