January 24, 2012 • 1h
Professor Fortey focuses on a series of cataclysms over a million-year period 250 million years ago.
January 31, 2012 • 1h
Professor Fortey focuses on the 'KT boundary'. 65 million years ago, a 10 km diameter asteroid collided with the Earth and saw the...Read more
February 7, 2012 • 1h
Professor Fortey looks at the Ice Age. 2.8 million years ago - triggered by slight changes in the Earth's orbit around the sun and...Read more