Science
WHO revoked Canada's measles elimination status after ongoing outbreaks and slipping childhood vaccination coverage, marking the first time in nearly three decades that measles was endemic there.
Scientists discovered a new wild bee species, Megachile Hackeriapis lucifer, in Western Australia's goldfields, noting its two horn-like projections and urgent conservation risk from mining and habitat loss.
Researchers in a European study of more than 86,000 people from 27 countries found that speaking multiple languages slowed biological and cognitive ageing and was linked to lower dementia risk.
Antonio García-Bellido died in Madrid on Monday at 89; he was Spain's leading developmental biologist and a pioneer in using Drosophila to map genetic organization.