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- From lawns to kitchen gardens – what effect would that have?
- Environmental impact of electricity generation
- Environmental impact of vehicles
- How far do I have to drive my car to use as much energy as it took to make it?
- Demonstrate and bury biochar as well
- Energy Slaves
- The price of carbon according to Swedish taxation levels
- The Maths of cities
- How much biochar do I need to bury actually?
- If the world were a village
- Outside work: get a feeling for a hectare and how much arable land there is.
- Bacteria growing in a bottle
- Indigenuity
- How much land per person
- Round walks as teaching tools
- More on radius
- What price do the Swedish Government put on Carbon?
- How much CO2 does one liter of petrol emit?
- Do the math on Climate with the movie
- Visualising the green economy
- Now that there are one billion cars on the planet
- Children can learn complex mathematics on their own new study suggests
- The horse and oat cart challenge
- The horse and oat carts problem
- City density
- Holding hands around the world
- If all the world lived in one city… how big would it be?
- The land use of cities
- Climate impact of cars
- How much carbon is there in carbon dioxide?
- Basic problems around climate
- New problems around land use
- Rain water harvesting
- How much land do we need to grow vegetables?
- Open-ended question: how much fertile land is there per person?
- Human waste production
- How long will our oil last?