The Pros
GM crops allow farmers to do things that previously seemed impossible. With GM crops, farmers no longer have to spray plants with pesticides because the plants themselves have built-in protection.
They can produce greater amounts of crops with less seed, cutting back costs immensely. Pesticides, weed-killers (herbicides), and fertilizer cost farmers staggering amounts of money every year.
GM foods can be altered to resist diseases and freezing, which can catch entire crops unsuspected and lay them to waste.
Genetically altered foods can also be manipulated to carry vitamins, minerals, and proteins that they otherwise would not have, increasing their healthiness.
Many also have lower levels of pesticides, herbicides, and toxins than traditional plants because farmers don't need to spray them with chemicals and insects aren't able to release toxin into them.
GM rice stimulates the body to make Vitamin A and its goal is to prevent 2 million children from dying and another 500,000 from going blind because of lack of vitamin A.
Genetically altered foods also harbor a hope that 600 million people around the world won't have to go hungry every day, because crops will be plentiful enough to feed them.
Some environmentalists feel that GM crops help the environment because they reduce the need for pesticides. Every year, farmers spray 970 million tons of chemicals on plants. This has a significant effect on the environment. For people like cotton farmers, GM crops mean only having to spray chemicals one or two times instead of nine times, decreasing the negative effect of pesticides on the environment. GM crops could even help to clean up the environment (this process of using plants to clean up the earth is called phytoremediation). For example, poplar trees have been modified to clean up heavy metal pollution.