agriculture

4 articles · All tags

• Hydroponics Explained: How Plants Grow Without Soil
  Hydroponics grows plants with their roots in water that carries dissolved mineral nutrients, so no soil is needed and the grower controls what the plant gets.
• What Was the Columbian Exchange? Crops, Animals and Disease
  The Columbian Exchange was the transfer of crops, animals, people and diseases between the Americas and the Old World after 1492, reshaping diets and populations.
• How the Haber–Bosch Process Makes Fertilizer From Air
  The Haber–Bosch process combines nitrogen from air with hydrogen over an iron catalyst at high heat and pressure, making ammonia for synthetic fertilizer.
• Honey Bees and Beekeeping
  The biology of Apis mellifera — one queen, tens of thousands of workers, and a communication system based on dance — and what managed hives actually give the world.