Today's Guest is Dr. Aubrey de Grey. He is an author and biomedical gerontologist.
Aubrey de Grey is the Chief Science Officer of the SENS Research Foundation. He is editor-in-chief of the academic journal Rejuvenation Research, author of The Mitochondrial Free Radical Theory of Aging, and co-author of Ending Aging. 
He is known for his view that medical technology may enable human beings alive today not to die from age-related causes. 
He has also contributed to the study of the Hadwiger–Nelson problem.