Daily: The world invested almost a billion dollars a day to limit global warming last year, according to a recent study. These figures come from the latest Climate Policy Initiative (CPI) report which found that the overall spend in 2012 was in fact $5 billion less than a year earlier. While this may seem like a huge amount, the total for the year ($359 billion) is only just half of the $700 billion per year that the World Economic Forum claims is need to address climate change. The International Energy...