Chinese emissions are a problem not just for its own people but also for the world. It has now overtaken the U.S. as the biggest carbon emitter; most of the coal that is burned anywhere on Earth is burned in China.

I have relentlessly beat the drum for Google's 'two-step' authentication systems for Gmail and other services, which radically reduce the likelihood that your account can be hacked from afar.

The hoary joke in the literary world, based on 'Dreams From My Father,' was that if things had worked out differently for Barack Obama, he could have made it as a writer.

When a company is charging money for a product - as Evernote does for all above its most basic service, and same for Dropbox and SugarSync - you understand its incentive for sticking with that product.

Environmental disaster is the gravest threat to China's continued development. That's according to me, but it is not some wacko view.

Everyone moans about the collapsing U.S. infrastructure.

Our military plans should be based on the assumption of unpredictability, rather than on carefully drawn, static models of the world.