Almost everybody uses the internet just about every day. But do you really know what the internet is? It’s a system built from decades of ideas and experiments.

The concentration of Internet traffic, infrastructure, services, and users on a handful of providers is a growing concern because of the economic, political, and reliability implications of these ...

HEIDELBERG, Germany—Every September, a critical mass of the world’s most decorated computer scientists and mathematicians gathers in the warm microclimate here. They discuss the states of their fields ...