It’s starting to look like Christopher Nolan is going to tease us all the way to summer. A little more than a week after the director wowed audiences with his The Dark Knight Rises prologue, there’s a new trailer offering even more of a taste — however brief — of the upcoming film.

Brief, but enticing. The clip (above) begins by reminding us that Gotham is now in peacetime and Batman/Bruce Wayne (played by Christian Bale) has been laying low for eight years. Then it gives more grit to the villainous Bane (Tom Hardy), who unceremoniously pulls the trigger on a bomb-rigged football stadium.

The...

Sphero is a new toy that meshes the personality and maneuverability of a remote-controlled car with the simple form factor of an ordinary ball.

You control this colorful, robotic sphere using apps that run on your smartphone. Sphero holds promise, but it’s going to take some imagination and some app development to really get the most out of this innovation. It’s not quite the future of gaming. For now, it’s just the future of cat toys.

It’s not quite the future of gaming. For now, it’s just the future of cat toys.

Sphero’s been hotly anticipated since its debut before last holiday season. The...