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b'Time keeps on ticking, ticking \\u2026 and as it does, evolution operates to produce remarkable changes in species. Wings may appear, tails disappear. Sea creatures drag themselves onto the shore and become landlubbers. But it\\u2019s not easy to grasp the expansive time scales involved in these transformative feats.\\nTravel through millennia, back through mega and giga years, for a sense of what can occur over deep time, from the Cambrian Explosion to the age of the dinosaurs to the rise of Homo sapiens.\\nGuests:\\n\\n\\nLorna O\\u2019Brien \\u2013 Evolutionary biologist, University of Toronto\\n\\n\\nIvan Schwab \\u2013 Professor of ophthalmology, University of California, Davis. His blog\\n\\n\\n\\nDon Henderson \\u2013 Curator of dinosaurs, Royal Tyrrell Museum, Drumheller, Canada\\n\\n\\nGregory Cochran \\u2013 Physicist, anthropologist, University of Utah\\n\\n\\nTodd Schlenke \\u2013 Biologist, Emory University\\n\\nDescripci\\xf3n en espa\\xf1ol\\nFirst released April 2, 2012\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'