The Voluntary Human Extinction Movement (VHEMT a graduate of Western Oregon University and high school substitute teacher living in Portland, Oregon. He later concluded that the extinction of humanity would be the best solution to the Earth's environmental problems. He believes that this idea has also been held by some people throughout human history.
thumbnail|Voluntary Human Extinction Movement cartoon by [[Nina Paley]]
In 1991, Knight began publishing VHEMT's newsletter, including a comic strip titled Bonobo Baby, featuring a woman who forgoes childbearing in favor of adopting a bonobo. In 1996, Knight created a website for VHEMT; it was available in 11 languages by 2010. VHEMT's logo features the letter "V" (for voluntary) and a picture of the Earth with north at the bottom.