Led a successful campaign In the late 1950s and early 1960s to designate two wilderness areas in South Africa, the first two on the continent.
Started a wilderness school to promote skills for living in the wild that more than 50,000 people have attended.
Helped found the World Wilderness Congress, which brings together thousands of scientists, politicians, bankers and others in international meetings every three years.
"To Tell the Truth" Occupation (1964): Chief game warden in Zululand.
As a government game official, he once airlifted crocodiles by helicopter from a highly saline part of the immense Lake St. Lucia in South Africa to a fresher part of the lake.