1x39 - Episode 39

April 19, 2012

1x40 - Episode 40

April 20, 2012

1x41 - Episode 41

April 24, 2012

1x42 - Episode 42

April 25, 2012

1x43 - Episode 43

April 26, 2012

1x44 - Episode 44

April 27, 2012

1x45 - Episode 45

April 30, 2012

1x46 - Episode 46

May 1, 2012

1x47 - Episode 47

May 2, 2012

1x48 - Episode 48

May 3, 2012

1x49 - Episode 49

May 4, 2012

1x50 - Episode 50

May 7, 2012

1x51 - Episode 51

May 8, 2012

1x52 - Episode 52

May 9, 2012

1x53 - Episode 53

May 10, 2012

1x54 - Episode 54

May 11, 2012

1x55 - Episode 55

May 14, 2012

1x56 - Episode 56

May 15, 2012

1x57 - Episode 57

May 16, 2012

1x58 - Episode 58

May 17, 2012

1x59 - Episode 59

May 18, 2012

1x60 - Episode 60

May 21, 2012

1x61 - Episode 61

May 22, 2012

1x62 - Episode 62

May 23, 2012

1x63 - Episode 63

May 24, 2012

1x64 - Episode 64

May 25, 2012

1x65 - Episode 65

May 28, 2012

1x66 - Episode 66

May 29, 2012

1x67 - Episode 67

May 30, 2012

1x68 - Episode 68

May 31, 2012

1x69 - Episode 69

June 1, 2012

1x70 - Episode 70

June 4, 2012

1x71 - Episode 71

June 5, 2012

1x72 - Episode 72

June 6, 2012

1x73 - Episode 73

June 7, 2012

1x74 - Episode 74

June 8, 2012

1x75 - Episode 75

June 11, 2012

1x76 - Episode 76

June 12, 2012

1x77 - Episode 77

June 13, 2012

1x78 - Episode 78

June 14, 2012

1x79 - 1941: Velcro

June 15, 2012

In the canton of Vaud, in 1941, George de Maestral invents the famous hook-and-loop fastener.

1x80 - Episode 80

June 18, 2012

1x81 - Episode 81

June 19, 2012

1x82 - Episode 82

June 20, 2012

1x83 - Episode 83

June 21, 2012

1x84 - Episode 84

June 22, 2012

1x85 - Episode 85

June 25, 2012

1x86 - Episode 86

June 26, 2012

1x87 - Episode 87

June 27, 2012

1x88 - Episode 88

June 28, 2012