
Jordanian Princess Sumaya, chair of the World Science Forum 2017 and president of the Royal Scientific Society, speaks during the opening ceremony of the World Science Forum 2017 in Sweimeh, Jordan, on Nov. 7, 2017. International scientists and policymakers gathered Tuesday at the World Science Forum 2017 in Jordan, calling for utilizing science to address pressing challenges and make peace. (Xinhua/Mohammad Abu Ghosh)