date:Feb 12, 2014
crops were introduced in the United States in 1996 and quickly became wildly popular with farmers, largely because they make crop production easier. The most popular gene-altered crops withstand dousings of weed-killing chemicals and produce their own insect-killing toxins.
Biotech corn, canola, soybeans, and other crops are used in human food and animal feed around the world and biotech companies say they are heavily regulated and thoroughly tested.
But some scientific studies have cast doubt