| 1 |  | |
new | 2 |  | |
▲1 | 3 |  | |
▼1 | 4 |  | |
| 5 |  | |
| 6 |  | |
| 7 |  | |
new | 8 |  | by Jeffrey Long, and Paul Perry |
| 9 |  | |
| 10 |  | by Fil Hunter, Steven Biver, and Paul Fuqua |
▼3 | 11 |  | |
▲1 | 12 |  | |
▼11 | 13 |  | |
▼3 | 14 |  | by Carl Sagan, and Ann Druyan |
new | 15 |  | |
| 16 |  | |
▲2 | 17 |  | |
new | 18 |  | |
▼1 | 19 |  | |
▲4 | 20 |  | |
▲7 | 21 |  | by Ted Williams, and John Underwood |
new | 22 |  | |
▼6 | 23 |  | |
▼1 | 24 |  | |
▼13 | 25 |  | |
new | 26 |  | |
new | 27 |  | |
▲9 | 28 |  | |
▲19 | 29 |  | |
▼15 | 30 |  | |
▼17 | 31 |  | |
▲2 | 32 |  | |
▲17 | 33 |  | |
| 34 |  | |
▼15 | 35 |  | |
▲2 | 36 |  | |
new | 37 |  | |
▼6 | 38 |  | |
▲4 | 39 |  | |
▼13 | 40 |  | |
▼4 | 41 |  | |
new | 42 |  | by Cathy Cobb, and Monty L. Fetterolf |
▼8 | 43 |  | |
▼22 | 44 |  | |
▲2 | 45 |  | |
▼6 | 46 |  | |
▼14 | 47 |  | |
▼26 | 48 |  | by M.D. Joe S. McIlhaney Jr, and M.D. Freda McKissic Bush |
▼14 | 49 |  | |
▼6 | 50 |  | |