The History and Function of Roundup is Surprising!

Roundup, and it's main ingredient, glyphosate, is one of the most widely used herbicide in the world. But what was it originally created for? Don Huber discusses that and how the chemical works to kill plants. If it does that to plants, what does it do when residue gets into animals and humans who consume those crops? You might find the history and function of roundup is surprising!