The malaria parasite has been killing children and sapping the strength of whole populations for tens of thousands of years. It is impossible to calculate the harm malaria has done to the world.

Know your numbers' is a fundamental precept of business.

The misconception that aid falls straight into the hands of dictators largely stems from the Cold War era.

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.

In the old generation, if one kid bought a PlayStation 2 and the other kid bought an Xbox, at his house you played PlayStation, at your house you played Xbox. Now that it's online, all those early buyers who... you want to play with, they've got their reputation online of who they are and how good they are at these games.

I'm a great believer that any tool that enhances communication has profound effects in terms of how people can learn from each other, and how they can achieve the kind of freedoms that they're interested in.

The greatest thing you can do for your competition - hire poorly.