And why do some of the world's richest want to give it all away?

About 7 percent of the rich world's jobs are held by people from developing countries.

You have never lived on a world rich with life.

The idea of an online game with such a rich world and story is appealing.

The rich world is searching for ways to help Africa.

What little words they are, to tell of a rich world made empty and poor!

It will be both a richer world and a less expensive one.

An animal, however, has a far more rich and complex world.

Finally, humans have the most rich and complicated world of all.

But, unlike the rest of the rich world's sheep, they do at least stand on their own four feet without any government support.