1. How Dogs Love Us: A Neuroscientist and His Adopted Dog Decode the Canine Brain
2. Meet Your Happy Chemicals: Dopamine, Endorphin, Oxytocin, Serotonin
3. Systema Naturae
4. Fahrenheit 451
5. Our Final Invention: Artificial Intelligence and the End of the Human Era
6. E=MC2: A Biography of the World’s Most Famous Equation
7. The Squid, the Vibrio & the Moon
8. What Is the World Made Of? All About Solids, Liquids, and Gases
9. Gray’s Anatomy
10. The Selfish Gene
11. Relativity: The Special and General Theory
12. Micro Monsters : Creatures That Live on Your Skin, in Your Hair, and in Your Home!
13. Syntactic Structures
14. Higgs Discovery: The Power of Empty Space
15. Universe: The Definitive Visual Guide
16. 1001 Inventions that Changed the World
17. Physics for Rock Stars: Making the Laws of the Universe Work for You
18. Confessions of a Sociopath: A Life Spent Hiding in Plain Sight
19. The Invisible History of the Human Race: How DNA and History Shape Our Identities and Our Futures
20. The Collapse of Western Civilization: A View from the Future

Science Book a Day started on the 1st of June, 2013 and celebrated its 2nd birthday today on the 1st of June, 2015. The 365 days since the last birthday and 365 books featured constitute Year 2. The above books were the most viewed books of the year. They represent a range of topics that we’ve presented including dogs, classics, physics, space, psychology and kids books. I look forward to featuring more books into the future!

Click here to see last year’s list: Science Book a Day 20 Most Popular Books of Year 1