Maize Biology 

Do We Really Need Fertilizers To Grow Crops?

By Radhika Desikan We all learn that plants can make their own food via a complex process called photosynthesis. However, to make their food, and to grow properly, plants need nutrients (chemicals) such as nitrogen, phosphorus, potassium, and calcium from the soil. Although these chemicals are naturally present in most soils, years of intensive farming have depleted soils of these nutrients. As a result, humans have resorted to using artificial fertilizers, which are basically synthetic nutrients manufactured through a process that uses a lot of energy, and produces a lot…

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GMOs and the Risk to Our Genetic Heritage Biology Environment 

GMOs and the Risk to Our Genetic Heritage

By Alex Taylor In 2001, high in the Sierra Norte de Oaxaca mountains of southern Mexico, UC Berkeley graduate student David Quist hiked along some of the world’s oldest cornfields. Quist was sampling cobs for DNA testing, and what he found kicked off a scientific firestorm and brought attention to a subtle threat to the future of global agriculture. In those ancient Mexican corn varieties, Quist detected the DNA signature of genetically modified organisms (GMOs). A living genetic repository Hike down those Oaxacan mountains and into village marketplaces, and you…

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