According to Wikipedia,
Malcolm L. McCallum is an American environmental scientist, conservationist, herpetologist, and natural historian and is known for his work on the Holocene Extinction. He is also a co-founder of the herpetology journal, Herpetological Conservation and Biology. He is a key figure in amphibian biology and his research has produced numerous landmark studies. His work has been covered by David Attenborough, Discover Magazine, and other media outlets.
Malcolm L. McCallum is affiliated with the following schools: