We explore because we are human and we want to know. I hope that Pluto will help us on that journey.
Every man should marry. After all, happiness is not the only thing in life.
There is a real danger that computers will develop intelligence and take over.
Now, radical forward thinking is offering hope for the future: Replacement body parts to order. A team of scientists in California believe that if you can design them on a computer, you should be able to print them out.
The real challenge is to work out what aliens might actually be like.
Maxwell is the physicist's physicist.