Can vaping cause cancer? The evidence suggests it might. The Washington Post World News in Brief: End e cigarette boom urges WHO, measles surge in Europe, Central Asia; crisis for kids in Lebanon UN News Top 20 countries with the highest smoking rates, according to data from the World Health Organization (WHO) and Wisevoter: Nauru: This small island nation in the Pacific tops the list with World Health Organisation backed review gives misleading view on e cigarettes: addiction experts ABC News E cigarettes need tight regulation, WHO says, citing health concerns South China Morning Post