An international team of psychiatrists has flown to Redmond, WA in an attempt to discover exactly what makes Bill Gates tick. And, more especially, what makes him go cuckoo every half hour.

Walking is a skill that took millions of years for us to develop... If you wanted to design a robot that could walk as well as a person, this would be fantastically complicated software. It would have to be doing billions of calculations with every step.

There's one thing that shows up on all of the lists of what makes us human: language. Our ability to share our thoughts and complex information with others far surpasses all the barks, squeaks and growls of our animal friends.

Just as words in their proper places form sentences, each individual strike must be done in the proper order to get the desired result: a flat stone blade.

If Apple ever lowers the iPod's price and develops Windows software for it, watch out: the invasion of the iPod people will surely begin in earnest.

The biggest surprise watching video on the tiny, 2.5-inch screen (320 by 240 pixels) is completely immersive. Three unexpected factors are at work. First, the picture itself is sharp and vivid, with crisp action that never smears the screen is noticeably brighter than on previous iPods. Second, because the audio is piped directly into your ear sockets, it has much higher fidelity and presence than most peoples TV sets. Finally, remember that a 2.5-inch screen a foot from your face fills as much of your vision as a much larger screen thats across the room.

Scientists in California have discovered a chemical in the brain that causes use of Windows in otherwise normal human beings. It's called alcohol.