A new understanding of evolutionary biology, a history of the definitions of and responses to Post-Traumatic Stress Disorder, and an investigation into the myriad causes of America's opioid crisis top the list of best-selling books on the history of science, as compiled by GOBI Library Solutions from EBSCO.

1. Tangled Tree: A Radical New History of Life
Quammen, David
Simon & Schuster. 2018. ISBN 9781476776620. $30.

2. PTSD: A Short History
Horwitz, Allan V.
Johns Hopkins University Press. 2018. ISBN 9781421426396. $28.95.

3. American Overdose: The Opioid Tragedy in Three Acts
McGreal, Chris
Public Affairs. 2018. ISBN 9781610398619. $27.

4. Accessory to War: The Unspoken Alliance Between Astrophysics and the Military
Tyson, Neil DeGrasse
W. W. Norton. 2018. ISBN 9780393064445. $30.

5. Fat Nation: A History of Obesity in America
Engel, Jonathan
Rowman & Littlefield. 2018. ISBN 9781538117743. $32.

6. Autobiography of A Transgender Scientist
Barres, Ben
MIT Press. 2018. ISBN 9780262039116. $21.95.

7. Midnight in Chernobyl: The Untold Story of the World's Greatest Nuclear Disaster
Higginbotham, Adam
Simon & Schuster. 2019. ISBN 9781501134616. $29.95.

8. Deep Learning Revolution
Sejnowski, Terrence J.
MIT Press. 2018. ISBN 9780262038034. $29.95.

9. Caring for Equality: A History of African American Health and Healthcare
McBride, David
Rowman & Littlefield. 2018. ISBN 9781442260597. $38.

10. Autonomy: The Quest to Build the Driverless Car—and How It Will Reshape Our World
Burns, Lawrence D.
Ecco. 2018. ISBN 9780062661128. $27.99.

11. Racial Divide in American Medicine: Black Physicians and the Struggle for Justice in Health Care
Deshazo, Richard D.
University Press of Mississippi. 2018. ISBN 9781496817686. $40.

12. People's History of Computing in the United States
Rankin, Joy Lisi
Harvard University Press. 2018. ISBN 9780674970977. $29.95.

13. Fly Girls: How Five Daring Women Defied All Odds and Made Aviation History
O'Brien, Keith
Houghton Mifflin Harcourt. 2018. ISBN 9781328876645. $28.

14. How the Internet Happened: From Netscape to the iPhone
McCullough, Brian
Liveright Publishing. 2018. ISBN 9781631493072. $28.95.

15. American Military: A Concise History
Glatthaar, Joseph T.
Oxford University Press. 2018. ISBN 9780190692810. $18.95.

16. Fighters: Americans in Combat in Afghanistan and Iraq
Chivers, C.J.
Simon & Schuster. 2018. ISBN 9781451676648. $28.

17. Secret World: A History of Intelligence
Andrew, Christopher M.
Yale University Press. 2018. ISBN 9780300238440. $40.

18. Freedom's Laboratory: The Cold War Struggle for the Soul of Science
Wolfe, Audra J.
Johns Hopkins University Press. 2019. ISBN 9781421426730. $29.95.

19. Discovering Retroviruses: Beacons In the Biosphere
Skalka, Anna M.
Harvard University Press. 2018. ISBN 9780674971707. $27.95.

20. Newton the Alchemist: Science, Enigma, and the Quest for Nature's 'Secret Fire'
Newman, William R.
Princeton University Press. 2019. ISBN 9780691174877. $39.95.