How to escape from the Iron Age? We cannot lower carbon emissions if we keep producing steel with fossil fuels.
27
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How to build a practical household bike generator
17 votes -
Direct solar power: Off-grid without batteries
28 votes -
Can we make bicycles sustainable again?
25 votes -
The mechanical transmission of power: Stangenkunst
6 votes -
How to design a sailing ship for the 21st century?
15 votes -
How and why I stopped buying new laptops
20 votes -
How to make biomass energy sustainable again: Coppicing, pollarding, and hedgerows
14 votes -
Thermoelectric stoves: Ditch the solar panels?
9 votes -
Fruit trenches: Cultivating subtropical plants in freezing temperatures
7 votes -
How sustainable is a solar powered website?
10 votes -
Too much combustion, too little fire
6 votes -
How to make wind power sustainable again
6 votes -
Electric velomobiles: as fast and comfortable as automobiles, but eighty times more efficient
14 votes -
Heat your house with a water brake windmill
20 votes -
How to build a low-tech website
20 votes -
How to build a low-tech website
31 votes