In my opinion Monsanto is a serious threat to humanity and the environment.
One word that I keep hearing about with growing alarm is Monsanto. People say that climate change, North Korea or al-Qaeda is a great threat to humanity, but few seem to associate a corporate agricultural giant as a threat.
Currently a small farmer in the USA is fighting Monsanto in the US courts involving patents on seeds, which has alarming consequences over food supply and genetic diversity.
I could rant and rave about Monsanto, but I shall keep this short and sweet. I recommend using search engines to explore what this Monsanto has been up to around the world, it may alarm you as it does me.