GMOs – a chance for food security or a threat to sustainable development?

The aim of the Conference Rio+20 which took place in June 2012 was to find appropriate ways to achieve sustainable development. The main theme of the Conference was the green economy whis is considered as one of the principals instruments to reach this goal. The subject of the article is to answer whether GMOs are a chance for food security or a threat to sustainable development? If we arrive at conclusion that genetically modified organism is the threat to sustainable development, it will not be recognized as a part of green economy. EU and USA law on GMO serves as a base for reflections. The article is divided into two parts: general and specific. The first part presents the definition of sustainable development, food security and genetically modified organisms. The second part describes precautionary principle and principle of equality which determined EU and USA law on GMO