The landscape of the Net has changed; that cyberfrontier of the past has become a teeming city of people, transactions, and businesses.

I've always resented the force of attraction that traps me here on Planet Earth. It makes me feel like a bug stuck to a piece of duct tape. Ever since my teenage years, when I used to read a lot of science fiction and took it much too seriously, I've dreamed of somehow reaching escape velocity. I am, you might say, anti-gravity.

When the International Space Station is finally launched, it will be fitted with special nickel-hydrogen batteries weighing a total of several tons, with a lifetime of just five years, requiring spares to be brought up from Earth at literally astronomical expense.

Scaremongering is an age-old political ritual. There are public officials who have benefited by playing up the 'hacker threat' so that they can win approval by cracking down on it.

Too often, the air conditioners we use to cool down also contribute to climate change - the very force that's fueling extreme heat.

The mammoth was basically done in by climate change. The last ones survived on Wrangel Island, north of Chukotka, until 3,700 years ago. According to Eveny mythology, mammoths scooped up dirt with their tusks to form the first dry land.

Food choices are something fundamental you can control about yourself: what you take into your body. When so many other things are out of control and your influence over climate change - all these much larger issues - it's very hard to see any results or any progress. But everybody can see progress around food.

In 10 years, I'd love to live near the sea, in a warmer climate. I could see myself with three dogs... and it'd be great to share them with someone else.