This awesome video was created by Drew Reams. He is a biology professor at California State University Sacramento. Outside the lab, he walks the land observing the products of gene diversity in their natural environment. 

In 2010, Drew Reams (trail name "Dreams") thru-hiked 2,700 miles from Mexico to Canada along the Pacific Crest Trail. Over 500 hikers started the trail this year, but due to the exceptionally deep snow less than 100 completed it. Dreams departed from the Mexican border on May 5, 2010. On the way, he passed through the beautiful Southern California desert mountains, snow-covered Sierra Nevada, and majestic Cascades. He stepped into Canada on September 13th, 2010. This movie consists of footage shot from his tiny 7 ounce handheld HD video camera. It provides only a very small taste of the interesting people and abundant nature he encountered during his 4+ month walkabout. Headphones highly recommended.

All credit goes to Drew Reams.