Guardian: Being gloomy has never been easier. Open any newspaper and the world looks every bit like it's going to pot. Carbon levels in the atmosphere are stratospheric, literally. Freak weather-related disasters are becoming two-a-penny. One in eight people are still going to bed hungry. The apocalypse, you'd think, is nigh.
Bryan Welch would like you to think otherwise. A rare breed in these doom-mongering days, 53-year-old Welch is an out-and-proud optimist. This is the man who gave his book about the...