More people than ever are signing up for marathons—and using the app to train for them. Its makers are adding ways to tone down plans some users found to be too aggressive.

Oculus VR shaped modern virtual reality like hardly any other company and now threatens to disappear for good. It's time for a look back.

Harris County Democrats should pick Katie Wilson, Brian Warren, Josh Hill and Michael Abner in the contested primary races for Criminal District Court.

Few scientific ideas have leapt from philosophy seminars to dinner-table debates as quickly as the claim that our universe might be an artificial construct. The simulation hypothesis promises a ...