The Amazing Life of Ants

There are about 20 quadrillion ants in the world. They can carry 50 times their own body weight and have existed for over 150 million years. In 1915, a physiologist from the US visited Canton City in China to find an orange variety resistant to citrus canker. The village boasted mulberry trees and silkworms but people cultivated silkworms and fed them to citrus ants. These ants were then sold to orange growers for a dollar, a nest. And that's when they challenged on a small village that lived off ants - most families sold ants for a living.