For the last decade, the general public has been bombarded with innumerable dire warnings about the current and future impact of global warming, and the politics regarding this has had a powerful impact on world agriculture. For the last decade, the general public has been bombarded with innumerable dire warnings about the current and future impact of global warming. Glaciers are shrinking, ocean levels are rising, extreme weather is becoming more common, future crop production is at risk and feeding the world's population will become much more difficult. Moreover, we are told, the primary cause of global warming is us. Mankind is releasing so much carbon dioxide and other greenhouse gases into the atmosphere that heat is trapped, causing t...