E01 31 Years Before the Wheel

E02 21007 Years Before Soccer

E03 22405 Years Before Bottled Water

E04 23506 Years Before Rocket Science

E05 2 Years Before Bow and Arrows

E06 25009 Years Before Music

E07 28314 Years Before Commercials

E08 26103 Years Before Fitness

E09 23111 Years Before Love

E10 29412 Years Before Dual Flush Toilets

E11 64 Years Before the Soup Plate

E12 28416 Years Before the Family Doctor

E13 ? Years Before Common Sense

E14 20614 Years Before Cheap Junk

E15 21415 Years Before Neighbourhood

E16 188116 Years Before the Barber Shop

E17 20517 Years Before Democracy

E18 23819 Years Before Diving

E19 20 Years Before Dance

E20 20321 Before Traffic

E21 26103 Years Before the Greenhouse Effect

E22 21023 Years Before the Aeroplane

E23 27326 Years Before Crossing Rivers

E24 22228 Years Before Music Videos

E25 247729 Years Before a Good Night's Sleep

E26 24130 Years Before Superstition