Magic in the Rocks

S1, E1: From the Leicestershire quarries where, as a boy, he was first captivated by fossils, David Attenborough travels across the planet to unravel some of the wonders and puzzles of paleontology. He encounters 30-million-year-old insects embedded in ancient resin, forests of colorful quartz and coal balls from vanished primeval swamps. But how do you find the world's oldest and rarest reptile?