the canyons

For thousands of years, humans have believed that there were once flying monsters. But did they really exist beyond our nightmares? 220 million years ago dinosaurs were beginning their domination of Earth. But another group of reptiles was about to make an extraordinary leap: pterosaurs were taking control of the skies. The story of how and why these mysterious creatures took t...。在这部纪录片中，导演以个人家庭的经历为切入点，深刻剖析了美国食品药品管理局和制药行业的诸多道德问题。。