Twenty of his staffers earned much less than he did, but "their tax burdens ranged from 33 percent to 41 percent," Mr. Buffet recently wrote.
MURDOCK: Calling Buffett's bluff →
Mr. Buffet said that, although he is motivated by the need to protect wildlife, a major concern is that profits from poaching are helping fund rebel wars across Africa and terrorist groups around the globe.
Warren Buffett's son to spend $23.7 million in effort to save South African rhinos →
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