Ever wonder what it would be like to go back to the basics? A YouTube channel called Primitive Technology shows one man's journey into the Stone Age as he makes weapons, clothing, shelter and other items — without ever uttering a word. John Plant, an Australian in his mid-30s, started Primitive Channel in May 2015. With 5.4 million subscribers and more than 359 million views, the project generates enough in ad revenue to fund Plant's frugal existence in far north Queensland. He also has a blog to further explain his work.

"I went to university and got a bachelor of science, but didn't do anything with it," Plant said via email. "Instead I mowed lawns for a living (self-employed) while doing Primitive Technology on the side as a hobby only." Plant said he's now doing videos full time because they supply "more money than mowing." Plant's obsession with subsisting off of nature started at age 11 when he would make small huts by a creek behind his house using only things he could find in the wild. He honed his skills and by age 18 could kindle a fire with sticks and leaves. "People are naturally wired to be interested in this sort of activity because in the past those who weren't probably died out or didn't pass on their genes," he said. "This hobby also keeps me fairly fit and active, which is good for health."