Season 18 aired between 26 Dec 2011 and 11 Apr 2021, 16 episodes.
Episodes
E01
Food: Cookies
21 Feb 2021
E02
Food: Cheese
28 Feb 2021
E03
Food: Ice Cream
07 Mar 2021
E04
Food: Chocolate
14 Mar 2021
E05
Food: Snacks
21 Mar 2021
E06
The Future of Food
28 Mar 2021
E07
Fast Food
04 Apr 2021
E08
Food: Inventions and Innovations
11 Apr 2021
E09
Stink
26 Dec 2011
E10
Waterproof
02 Jan 2012
E11
Wood
09 Jan 2012
E12
Convenience Stores
16 Jan 2012
E13
Tiny Weapons
23 Jan 2012
E14
Under Pressure
30 Jan 2012
E15
Shoes
06 Feb 2012
E16
Alaska
20 Feb 2012