图片来源
1. Computer artwork KTSDESIGN/Science Photo Library.
2.The Triumph of Death, c.1562, Bruegel, Pieter the Elder The Art Archive/Alamy Stock Photo.
3. NIAID/CDC/Science Photo Library.
4. Moscow, 1968 Sovfoto/UIG via Getty Images.
5. 14世纪法国手稿中的“死亡与死去”：Pilgrimage of the Human Life, Bodleian Library, Oxford Art Media/Print Collector/ Getty Images.
6. CHICUREL Arnaud/Getty Images.
7. American Spirit/Shutterstock.com.
8. Imagebank/Chris Brunskill/Getty Images/Bridgeman Images.
9. H. Armstrong Roberts/ClassicStock/Getty Images.
10. De Agostini Picture Library/G.Nimatallah/Bridgeman Images.
11.图示：全球大型动物数量饼图。
12. Detail from Michelangelo Buonarroti (1475–1564), the Sistine Chapel, Vatican City LessingImages.
13. Balint Porneczi/Bloomberg via Getty Images.
14.左图： Bergserg/Shutterstock.com.右图： s_bukley/Shutterstock. com.
15. Karl Mondon/ZUMA Press/Corbis.
16. Adapted from Weiss, J.M., Cierpial, M.A. & West, C.H., ‘Selective breeding of rats for high and low motor activity in a swim test: toward a new animal model of depression’,Pharmacology, Biochemistry and Behavior 61:49–66 (1998).
17. 同上
18. 2004 TopFoto.
19. NOVOSTI/AFP/Getty Images.
20. Rudy Burckhardt, photographer.Jackson Pollock and Lee Krasner papers, c.1905–1984.Archives of American Art, Smithsonian Institution. The Pollock–Krasner Foundation ARS, NY and DACS, London, 2016.
21.左图： Richard Nowitz/Getty Images.右图： Archive Photos/ Stringer/ Getty Images.Image credits 429
22. Courtesy of the Sousa Mendes Foundation.
23. Courtesy of the Sousa Mendes Foundation.
24. Antiqua Print Gallery/Alamy Stock Photo.
25. Woodcut from ‘Passional Christi und Antichristi’by Philipp Melanchthon, published in 1521, Cranach, Lucas (1472–1553) (studio of) Private Collection/Bridgeman Images.
26.数据来源：Emission Database for Global Atmospheric Research (EDGAR), European Commission.
27. Bibliothèque nationale de France, RC-A-02764,Grandes Chroniques de Francede Charles V, folio 12v.
28.手稿：Registrum Gregorii, c.983 Archiv Gerstenberg/ullstein bild via Getty Images.
29. Sadik Gulec/Shutterstock.com.
30. CAMERIQUE/ClassicStock/Corbis.
31. Jeff J Mitchell/Getty Images.
32. Molly Landreth/Getty Images.
33. The Thinker, 1880–81 (bronze), Rodin, Auguste, Burrell Collection, Glasgow Culture and Sport Glasgow (Museums)/Bridgeman Images.
34. DeAgostini Picture Library/Scala, Florence.
35. Bpk/Bayerische Staatsgem氀搀攀猀愀洀洀氀甀渀最攀渀.
36. Staatliche Kunstsammlungen, Neue Meister, Dresden, Germany Lessing Images.
37. Tom Lea,That 2,000 Yard Stare, 1944.Oil on canvas, 36\'\'x28\'\'.LIFE Collection of Art WWII, U.S. Army Center of Military History, Ft.Belvoir, Virginia.Courtesy of the Tom Lea Institute, El Paso, Texas.
38. Bettmann/Corbis.
39. VLADGRIN/Shutterstock.com.
40.Virgin and Child, Sassoferrato, Il (Giovanni Battista Salvi) (1609–85), Musee Bonnat, Bayonne, France Bridgeman Images.
41. Bettmann/Corbis.
42. Jeremy Sutton-Hibbert/Getty Images.
43.左图： Fototeca Gilardi/Getty Images.右图： alxpin/Getty Images.
44. Sony Pictures Television.
45. STAN HONDA/AFP/Getty Images.
46. ‘EM spectrum’.Licensed under CC BY-SA 3.0 via Commons, https://commons.wikimedia.org/wiki/File:EM_spectrum.svg#/media/File:EM_spectrum.svg.
47. Cornell Bioacoustics Research Program at the Lab of Ornithology.
48.图示：意识的频谱。
49. ITAR-TASS Photo Agency/Alamy Stock Photo.
50. Jonathan Kirn/Getty Images.