Nearly three weeks after Hurricane Maria tore through the Caribbean, Puerto Rico is still mostly an island deleted from the present and pushed back a century or so—with little clean water, little electric power, and almost no telecommunications. For telecom, the biggest problem is the lack of power, because most of the island’s transmission lines were knocked out.

Get in-depth coverage of current and future trends in technology, and how they are shaping business, entertainment, communications, science, politics, and society.