Mass extinctions, rising temperatures, and changing glaciers may sound like current events, but Earth scientists are learning that this type of climate change is nothing new. Â This week on Skepticality, Swoopy talks with Dr. Donald R. Prothero about his new book Greenhouse of the Dinosaurs: Evolution, Extinction, and the Future of Our Planet. Prothero discusses the links between the climate changes that have occurred over the past 200 million years. Â Dr. Prothero also discusses "Ida," a 47-million year old fossil the media is hailing as yet another "missing link." Is Ida all she is hyped up to be â or is this Darwinius masillae just one more transitional fossil supporting the theory of evolution?