More than a century ago, a Harvard undergraduate named Alfred Vincent Kidder came out west. He came to volunteer at some archaeological sites that had just been excavated - places like Mesa Verde and other ancient ruins.
Nicknamed Ted, he had little more than a tape measure, a cheap compass and a Kodak camera. But the experience changed his life - and the course of southwestern archaeology.
This year Americans will spend millions of dollars to eradicate weeds in yards, fields, and gardens. Meanwhile, a group of enthusiasts in Durango, Colorado, has come up with a different approach: eat the weeds!