2016 
The Triumph of Seeds: How Grains, Nuts, Kernels, Pulses, & Pips Conquered the Plant Kingdom and Shaped Human History  
by Thor Hanson (Basic Books)
2015
 
Animal Weapons: The Evolution of Battle
  by  Douglas J. Emlen (Henry Holt & Co.)
2014 
Einstein and the Quantum: The Quest of the Valiant Swabian  
by A. Douglas Stone (Princeton University Press)
2013 
The Signal and The Noise: Why So Many Predictions Fail - But Some Don't
  by Nate Silver (The Penguin Press)
2012 
The Fate of Greenland: Lessons from Abrupt Climate Change  by Philip Conkling, Richard Alley, Wallace Broecker and George Denton (The MIT Press) 

2011 
Beyond Smoke and Mirrors: Climate Change and Energy in the 21st
  by Burton Ritcher (Cambridge University Press)
2010 
Complexity: A Guided Tour  
by Melanie Mitchell (Oxford University Press)
2009 
The Art and Politics of Science  
by Harold Varmus (W.W. Norton and Company)
2008
Your Inner Fish: A Journey into the 3.5-Billion-Year History of the Human Body
  by Neil Shubin (Pantheon Books) 
2007 
The Making of the Fittest  
by Sean B. Carroll (W.W. Norton and Company)
2006
Plows, Plagues, and Petroleum: How Humans Control of Climate
  by William F. Ruddiman (Princeton University Press) 
2005 
The Hunt for the Dawn Monkey: Unearthing the Origins Monkeys, Apes and Humans
  by Chris Beard (University of California Press) 
2004 
Issac Newton  
by James Gleick (Pantheon Books) 
2003
Life on a Young Planet: The First Three Billion Years of Evolution on Earth 
 by Andrew H. Knoll (Princeton University Press) 
2002 
A Brain for All Seasons: Human Evolution & Abrupt Climate Change  
by William H. Calvin (The University of Chicago Press) 
2001 
The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future  
by Richard B. Alley (Princeton University Press)
2000
Cradle of Life: The Discovery of the Earth's Earliest Fossils  
by J.William Schopf (Princeton University Press) 
1999  
The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory  
by Brian Greene (W. W. Norton & Company)
1998  
Taking Wing: Archaeopteryx & The Evolution of Bird Flight  
by Pat Shipman (Simon & Schuester)
1997  
Guns, Germs, and Steel  
by Jared Diamond (Norton) 
1996  
Where Does the Weirdness Go? Why Quantum Mechanics Is Strange, But Not as Strange as You Think, and Steel  
by David Lindley (Basic Books)
1995  
Journey to the Ants: A Story of Scientific Exploration  
by Edward O. Wilson and Bert Holldobler (Harvard University Press)
1994  
Black Holes & Time Warps: Einstein’s Outrageous Legacy  
by Kip S.Thorne (Norton) 
1993  
Living Within Limits: Ecology, Economics, and Population Taboos  
by Garrett Hardin (Oxford University Press)
1992  
One Long Argument: Charles Darwin and the Genesis of Modern Evolutionary Thought  
by Ernst Mayr (Harvard University Press) 
1991  
Envisioning Information  
by Edward R. Tufte (Graphics Press) 
1990 
Wonderful Life: The Burgess Shale and the Nature of History  
by Stephen Jay Gould (Norton) 
1989 
The How And The Why: An Essay on the Origins and Development of Physical Theory  
by David Park (Princeton University Press)
1988  
Infinite in All Directions 
by Freeman Dyson (Harper & Row)
1987  
Chemicals and Society: A Guide to the New Chemical Age  
by Hugh D. Crone (Cambridge University Press)
1986  
The Mystery of Comets  
by Fred L. Whipple (Smithsonian Institution Press)
1985  
The Scientific Reinterpretation of Form  
by Norma E. Emerton (Cornell University Press)
1984  
Frozen Star: Of Pulsars, Black Holes and the Fate of Stars  
by George Greenstein (Freundlich Books)
1983  
Hen’s Teeth and Horse’s Toes: Further Reflections in Natural History 
by Stephen Jay Gould (Norton)
1982  
Emerging Cosmology 
by Sir Bernard Lovell (Columbia University Press)
1981  
Cosmic Dawn: The Origins of Matter and Life  
by Eric Chaisson (Atlantic-Little, Brown)
1980 
The Image of Eternity: Roots of Time in the Physical World 
by David A. Park (University of Massachusetts Press)
1979  
Ice Ages: Solving the Mystery  
by John Imbrie and Katherine Palmer Imbrie (Enslow Publishers)
1978  
Mechanics of the Mind  
by Colin Blakemore (Cambridge University Press)
1977  
The High Frontier: Human Colonies in Space  
by Gerard K. O’Neill (William Morrow)
1976  
Beautiful Swimmers: Watermen, Crabs and the Chesapeake Bay  
by William W. Warner (Atlantic-Little, Brown)
1975  
The Healing Hand: Man and Wound in the Ancient World  
by Guido Majno (Harvard University Press)
1974  
Darwin on Man  
by Howard E. Gruber and Paul H. Barrett (Harvard University Press)
1973  
The Computer from Pascal to von Neumann  
by Herman H. Goldstine (Princeton University Press)
1972  
The Closing Circle: Nature, Man and Technology  
by Barry Commoner (Knopf)
1971   
Vitamin C and the Common Cold   
by Linus Pauling (W. H. Freeman)
1970  
The Life and Death of a Salt Marsh  
by John and Mildred Teal (Atlantic-Little, Brown)
1969  
Antibodies and Immunity  
by G. J. V. Nossal (Basic Books)
1968  
Great Waters  
by Sir Alister Hardy (Harper & Row)
1967  
Modern Genetics  
by Haig P. Papazian (W. W. Norton)
1966  
Man Adapting  
by Rene Dubos (Yale University Press)
1965  
Bird Migration  
by Donald R. Griffin (Anchor Science Study Series) 
1964 
The Origin of Adaptations  
by Verne Grant (Columbia University Press)
1963 
The Unseen World  
by Rene Dubos (The Rockefeller Institute Press association with the Oxford University Press)
1962 
The World of Ice  
by James L. Dyson (Knopf) 
1961  
Communication Among Social Bees  
by Martin Lindauer (Harvard University Press)
Love of learning is the guide of life.