Using Garbage to Rebuild Tired Soil

Soil gets tired as repeated farming slowly robs it of nutrients. In the past, farmers would be forced to keep their fields empty for a season while the soil recharged, or plant crops like peanuts that put nutrients back into the soil. But UK researchers are adding garbage to their dirt as a way to keep it healthy. VOA's Kevin Enochs reports that the project is important because so much of the world's topsoil is degraded.