David Seaborg is a renowned evolutionary biologist. He originated the concept that organisms act as feedback systems with respect to their evolution, and that they thus play an important role in guiding their evolution. This concept is a mechanism for punctuated equilibrium. He showed that the standard genetic code is on an adaptive peak, and how populations cross over maladaptive valleys from one adaptive peak to another. He published a hypothesis to explain how homosexuality evolved even though it theoretically reduces the number of offspring produced. He wrote an article on the serious non-climatic effects of excess carbon in the atmosphere. He wrote two books on his influential Autocatalytic Biodiversity Hypothesis, which proposes that all species help their ecosystem and other species, and increase biodiversity, in natural ecosystems. He has taught biology from kindergarten to the university level. He founded and is President of the World Rainforest Fund, a nonprofit, tax exempt foundation dedicated to saving the Earth’s tropical rainforests and biodiversity by empowering the indigenous people who live in rainforests. David conceived the idea for and organized a press conference of Nobel Prize winners on global environmental issues held at the 100th Nobel Prize ceremonies in Stockholm in 2001.