00:00 Intro 02:12 Digger first steps 04:44 Fix road and edges 07:12 More digging 08:44 Impressions + research module 10:19 Biodigester (empty first) 14:14 Fix the design 18:12 Test air tightness 20:40 Re-start the digestion 22:53 Upgrade the gasometer 24:32 The moment of truth 25:42 Biodigester tea 27:59 Improvements to the system 30:57 Fertilizer