HumansFarmers used trash to grow crops in barren sand 1000 years ago Crops don't generally thrive in desert-like ground, but 1000 years ago farmers in Israel utilised refuse such as ash and bones to turn sand into fertile land News
EnvironmentCrushed rocks and fertiliser switches can cut nitrous oxide from farms Adding crushed basalt rocks and special fertilisers to soils could cut nitrous oxide emissions without harming the ozone layer, but these strategies will cost billions News