A 10-year-old dead of exhaustion. More than a dozen dead from pneumonia and about 100 from tuberculosis. These are among the ...

Aryan Poduri's book, "GOAT Coder," teaches children how to code through hands-on exercises and uncomplicated explanations.

The room we are in is locked. It is windowless and lit from above by a fluorescent bulb. In the hallway outside—two stories beneath the city of London—attendants in dark suits patrol silently, giving ...