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...technology is necessarily bio-organic: adding fertilisers or pesticides to the growbeds would soon damage the fish, while feeding the fish antibiotics would harm the plants. In any case, there is less need for agrochemicals and pharmaceuticals since aquaponics means less disease and faster growth<. The widespread use of agrochemicals in our current food production makes...

...technology existed for electric vehicles – hailed today as one of the main ways to tackle the urban pollution crisis. The adoption of a revolutionary vehicle called the electrobus could have ushered in an age of clean transport – and clean air. Hamer tells the story of how a massive fraud of shareholders and various other scurrilous activities acted as a severe brake...