The basic tools. A preliminary remark : water and friends ; Matter falling out ; Give and take ; Burns night ; Back to basics ; Two hands clapping ; Electric occurrence ; The generation game ; The death of metal ; Civil partnerships ; Changing partners ; Marriage broking ; Divorce and reconciliation -- Assembling the workshop. Stringing along ; Snapping together ; Missile deployment ; Electronic warfare ; Fasteners ; Zippers ; Adding up ; Taking away ; Carbon footprints ; Networking opportunities -- Making light work. Dark matter ; Irritating atmospheres ; Seeing the light ; Green chemistry -- Building by design. Food for thought ; Grand designs -- Economizing.