His book, "The Island of the Colorblind," was the result of Dr. Oliver Sacks' travels to Micronesia. Sacks was puzzled by how people that were color blind could tell if a banana was ripe. A man told him that one must rely on the smell of the banana and its texture. The second part of the book is devoted to Sacks' travels to Guam.*Please note: some sections have been edited out from the original recording due to copyright considerations