At Microsoft there are lots of brilliant ideas but the image is that they all come from the top - I'm afraid that's not quite right.

I'm an investor in a number of biotech companies, partly because of my incredible enthusiasm for the great innovations they will bring.

Innovations that are guided by smallholder farmers, adapted to local circumstances, and sustainable for the economy and environment will be necessary to ensure food security in the future.

The tool that's most associated with the recent progress against malaria is the long-lasting bed net. Bed nets are a fantastic innovation. But we can do even better. We can invent new ways to control the mosquitoes that carry the malaria parasite.

Steve Jobs' ability to focus in on a few things that count, get people who get user interface right, and market things as revolutionary are amazing things.

I believe in innovation and that the way you get innovation is you fund research and you learn the basic facts.