 In the last few weeks, we've examined the reality of human cause global warming. This week, we'll look at the global impacts of this change in an effort to answer the question, how is climate change affecting human societies, natural environments, and the species we share them with. We'll examine how things like longer and hotter heat waves, more intense rainfall, and other forms of extreme weather cause impacts that ripple through every aspect of society. As usual, we'll hear from a range of experts, from scientists who have meticulously collected data for decades, to biologists and filmmakers who have witnessed the effects of climate change before their very eyes. We'll also travel here to Heron Island Research Station on the Great Barrier Reef, where scientists are researching the combined impacts of global warming and ocean acidification on coral reefs. As we look at these different impacts, we'll debunk a number of myths that try to downplay their significance.