For this discussion read: "Hang On: Biodiversity" in The Economist, Sep 14, 2013; Vol. 408 (8853): 13 (main issue) and in your initial post comment on the following:
Question 1. What does the first line state? What evidence is given in the article to support this statement?
Question 2. What two factors are listed as the biggest threats to biodiversity?
Question 3. What is your opinion of GM (genetically modified) foods/seeds?