Leakey and Donald Johanson were at the time considered to be the most famous palaeoanthoropologists, and scientifically their views on human evolution were differing, a scientific rivalry that gained public attention. This culminated at the "Cronkite's Universe" talk show hosted by Walter Cronkite in New York in 1981, where Leakey and Johanson held a fierce debate on live TV show.
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