Pigeon towers helped Persian farmers cultivate all kinds of crops on previously arid, thin-soil land.
Virtually all human cultures have made baskets, and have apparently done so since we co-existed with ground sloths and sabre-toothed cats.
Flushing the water closet wreaks ecological havoc, deprives agricultural soils of essential nutrients and makes food production dependent on fossil fuels.
The embodied energy of the memory chip alone exceeds the energy consumption of a laptop during its life expectancy of 3 years.
Wood, steel, aluminium, iron, glass, paper, plastics, copper, silicon, nickel, titanium, electronic grade silicon.
Artificial floating islands can be used to clean urban bodies of water. Any polluted canal, river, estuary, lake in a city park, or storm water retention pond would benefit from a floating island.
Drinking bottled water is a more ecological choice than consuming soft drinks, coffee, fruit juice or beer.
Energy hungry America teaches the world how to build ecological houses.