So science alone cannot solve this problem [mass extinction of humans]. It's something that we can only tackle by bringing science together with culture, economics, and even politics.

think we're still stuck in that agricultural mindset, where we imagine that we can shape the Earth. Sure, we can do that. But the Earth has the power to shape us much more powerfully. To survive climate change, we'll have to realize how dependent we are on our ecosystems for our own survival.

I think that humans are also set up to survive. We're not as small as rats, but we make up for that by being intelligent enough to make our own hiding places and to adapt to new habitats, even if they are changing very quickly. We have an enormous population, and can afford to lose billions of people without suffering very much as a species. Indeed, some would say losing five billion people would be good for the planet - I disagree with them, but can't deny that we would do just fine if there were two billion of us or even one billion.

I disagree that we need to contemplate eliminating ourselves in order to move forward. Sure, I think a good dystopian story can serve to steer us on the right path toward a better world. But we also need stories that offer solutions to our problems that are realistic, and workable today.

I don't know if most people have truly taken on board what this says about our place in the natural world. It doesn't mean that humans are dominating the Earth, ruling over all of nature. In fact, it is a reminder that we are only a tiny part of nature, at the mercy of a system whose operations predate us by billions of years, and will continue billions of years after we're gone.

Using virtual world, a scientist in Japan can conduct an experiment using a special facility in California, watching the entire thing via a live stream - and possibly controlling the experimental equipment remotely. We can use that same kind of technology to control a robot on Mars.

Cities should function more like ecosystems, or even metabolisms. When we build, we should be thinking about how we can integrate into the ecosystems around us, but without sacrificing all the niceties of civilization like good restaurants, concert halls, and high-speed Internet access. I'm saying that partly tongue-in-cheek, but I'm also deadly serious. The future of technology is sustainable ecology.