Urban planners say cities must make it possible to return to the streets and shop without losing the safety of physical distancing.

Autonomous vehicles have gotten pretty good at detecting other cars and pedestrians. But "seeing" bikes and predicting what they'll do is still a challenge. The answer may lie in bikes themselves.

Without federal intervention, retired coal miners could lose their health care and pensions at the end of April. That would devastate the miners, and their communities.