GMO: Friend, or Foe?

 What is GMO? 
GMO stands for Genetically Modified Organism. 

Here is the actual definition:
[ noun
1. genetically modified organism: an organism or microorganism whose genetic material  has been altered by means of genetic engineering. ]

It seems when people talk about GMO's, they are usually referring to genetically modified foods. Are GMO foods bad? Are they damaging to human health? Are they damaging to the environment?

If you have ten minutes, take a look at the debate.

One of the original founders of Greenpeace, Patrick Moore, has this to say:
https://www.prageru.com/courses/environmental-science/are-gmos-good-or-bad
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But Dr. Joseph Mercola has a very different perspective:
https://www.youtube.com/watch?v=_FkY8tKS1uo

So what do you think? Do you avoid GMO's? Do you reach for the product which has the "Non GMO Project Verified" label? If so, why?