There are examples from across the animal kingdom of medical marvels – animals whose behaviors and diet may point to ways in which humans might reduce heart disease, or ward off dementia. Correspondent Jonathan Vigliotti talks with Dr. David Agus and Dr. Joshua Schiffman, who is exploring how an elephant’s genetics may offer clues to fighting off cancerous cells. Editor’s note: Following accusations of plagiarism, Dr. Agus and Simon & Schuster recalled “The Book of Animal Secrets” on March 6. Agus plans to rewrite it. Simon & Schuster does not currently have a projected publication date for the new version of the book.