Richard Sima

Richard Sima is a science writer based in Baltimore, Md. He covers the environmental and life sciences and has written for Scientific American, Discover, New Scientist, and elsewhere. He has a Ph.D. in neuroscience from Johns Hopkins University and an undergraduate degree in neurobiology from Harvard College.

Q&A with Johns Hopkins neuroscientist David Linden, on the science of human individuality and his book ‘Unique’


As of this writing, there are – give or take – 7,815,637,687 human beings living on planet Earth.  This staggeringly large number is made even more unfathomable by the fact that each one of us is unique in the particular combination of features that make us, well, us.

How we become the individuals we become is the fascinating question that Johns Hopkins Neuroscience professor David J. Linden explores in his latest book “Unique: The New Science of Human Individuality.”  It is a big question, and Linden tackles not only the roles that genetics and experience play in shaping who we are, but also the varieties of human experiences found in traits ranging from food and sexual preference to gender and race – and more.