Kerosene is expensive, difficult to transport and causes breathing problems. But some inventors are coming up with ways to resolve these problems.
Another neat idea invented by four Harvard women is the sOckett. A soccer ball that stores energy imparted by being kicked and then allows a lamp to be plugged into it at night. Check out the cool video:
But light at night is not the only problem. People living squeezed together in shanty-towns around the world lack light in the day. To the rescue comes the coolest idea yet.