The ideas are aimed at solving the principal challenges rural Africa faces.

In rural Africa, people can be infected several times a year.

National laws are rarely known, let alone enforced, in rural Africa.

Currently deployed in rural Africa, its simple and purpose-built nature makes it an example of appropriate technology.

But that would require a bicycle, a rare possession in much of rural Africa.

For centuries, women in rural Africa have carried heavy loads on their heads as they take goods to market.

This will allow vital water pumps to be fixed much more quickly in rural Africa.

Almost invariably men, tribal leaders are rural Africa's cultural arbiters.

In rural Africa, about 70 percent of girls do not finish primary school.

The moon isn't that different from parts of rural Africa: bare, rocky, little water, no infrastructure.