| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | The Science Behind Electronics Recycling |
July 24, 2021
|
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| S04E02 | The ABCs of Pneumatics |
July 31, 2021
|
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| S04E03 | Innovations in Forestry Management |
August 7, 2021
|
||
| S04E04 | Empty Driver's Seat |
August 14, 2021
|
20 | |
| S04E05 | Semiconductors in Space |
August 21, 2021
|
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| S04E06 | Science Behind Relocation |
August 28, 2021
|
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| S04E07 | Pipe Dreams |
September 25, 2021
|
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| S04E08 | The Clean Factor |
October 9, 2021
|
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| S04E09 | The Future of Nuclear Energy |
September 30, 2021
Discovery
|
||
| S04E10 | The Past, Present and Future of Nuclear Energy |
October 30, 2021
|
||
| S04E11 | Nuclear Does What, Now? |
November 13, 2021
Discovery
|
||
| S04E12 | Getting Paid to Shop |
November 20, 2021
|
||
| S04E13 | The Science Behind Supplements |
November 27, 2021
Discovery
|
||
| S04E14 | The Tires of Tomorrow |
December 11, 2021
|
||
| S04E15 | Material Science Meets Building Science |
December 18, 2021
Discovery
|
||
| S04E16 |
Cyber Weaponry: Thinking Like An Attacker
season finale
|
January 29, 2022
Discovery
|
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