In Malawi, practically any shoe is a luxury. Lilongwe, the capital, is maybe the only African city where I have seen grown men walking down the streets barefoot. They are ashamed, ...

In the Disney movie Big Hero 6, Hiro Hamada is a brainy 14-year-old prodigy who inherits his late brother Tadashi's invention—an inflatable, balloon-like, health care robot named ...