In a rare public speech, Google Inc. CEO Larry Page once suggested the tech industry needs “safe places where we can try out new things” without rules or interference. Some people thought he was describing a futuristic fantasy, perhaps a remote desert island where robots roam free.

But Mr. Page has the next best thing in Google X, the secretive facility where company scientists get free rein to work on things such as self-driving cars, Internet-connected balloons, and flying power generators.

See Google X Here.