6x1 - Episode 1

January 15, 2007

6x2 - Episode 2

6x3 - Episode 3

6x4 - Episode 4

6x5 - Episode 5

6x6 - Episode 6

6x7 - Episode 7

6x8 - Episode 8

6x9 - Episode 9

6x10 - Episode 10

6x11 - Episode 11

6x12 - Episode 12

6x13 - Episode 13

6x14 - Episode 14

6x15 - Episode 15

6x16 - Episode 16

6x17 - Episode 17

6x18 - Episode 18

6x19 - Episode 19

6x20 - Episode 20

6x21 - Episode 21

6x22 - Episode 22

6x24 - Episode 24

6x25 - Episode 25

6x26 - Episode 26

6x27 - Episode 27

6x28 - Episode 28

6x29 - Flying Whales and Hippo Sunscreen

April 1, 2019

Why do dogs tilt their heads; how do massive humpback whales propel themselves into the air; do hippos sweat blood; why do animals swarm; and why do spiders jump out of their skin.

6x30 - Episode 30

6x31 - Episode 31

6x32 - Episode 32

6x33 - Episode 33

6x34 - Episode 34

6x35 - Episode 35

6x36 - Episode 36

6x37 - Episode 37

6x38 - Episode 38

6x39 - Episode 39

6x40 - Episode 40

6x41 - Episode 41

6x42 - Episode 42

6x43 - Episode 43

6x44 - Episode 44

6x45 - Episode 45

6x46 - Episode 46

6x47 - Episode 47

6x48 - Episode 48

6x49 - Episode 49

6x50 - Episode 50

6x51 - Episode 51

6x52 - Episode 52

6x53 - Episode 53

6x54 - Episode 54

6x55 - Episode 55

6x56 - Episode 56

6x57 - Episode 57

6x58 - Episode 58

6x59 - Episode 59

6x60 - Episode 60

6x61 - Episode 61

6x62 - Episode 62

6x63 - Episode 63

6x64 - Episode 64

6x65 - Episode 65

6x66 - Episode 66

6x67 - Episode 67

6x68 - Episode 68

6x69 - Episode 69

6x70 - Episode 70

6x71 - Episode 71

6x72 - Episode 72

6x73 - Episode 73