From innovation in architecture and robotics to mobile apps and interactive games, technology is reshaping our understanding of and approach to world hunger.
While many cities cluster health services, and have hotspots for certain kinds of drug use, Boston's "Methadone Mile" is unique in that, here, the two clusters overlap.
Researchers argue that reducing fine particulate matter from forest fires, cars, and coal-fueled power plants is worth it, even if the levels are already low.