NOVAفصل 8 افزودن تصویرشماره قسمت8The Asteroid and the DinosaurOverviewFor 150 million years, dinosaurs dominated the earth. Then, 65 million years ago, they suddenly vanished, along with a great deal of the planet's animal and plant life. NOVA examines a remarkable theory about the cause of the catastrophe—in which the first clue to the solution was a piece of clay.Air dateMarch 10, 1981Runtime (min)60