The rit valley is a high energy environment for homorectus to evolve in. But as the lakes build up, they're so like pumping the population out of the area. This pushes human asof ancestor out of africa, into asia and down into places as far as indonesia. What use then did humel erectus make of ther newly liberated hands? They no longer had to on them. It also ties in what josie was saying about so of like how social we were. We were probably living homerexas, probably living in groups of about a hundred. That's because we can keep track of that number of people at that stage.
Melvyn Bragg and guests discuss one of our ancestors, Homo erectus, who thrived on Earth for around two million years whereas we, Homo sapiens, emerged only in the last three hundred thousand years. Homo erectus, or Upright Man, spread from Africa to Asia and it was on the Island of Java that fossilised remains were found in 1891 in an expedition led by Dutch scientist Eugène Dubois. Homo erectus people adapted to different habitats, ate varied food, lived in groups, had stamina to outrun their prey; and discoveries have prompted many theories on the relationship between their diet and the size of their brains, on their ability as seafarers, on their creativity and on their ability to speak and otherwise communicate.
The image above is from a diorama at the Moesgaard Museum in Denmark, depicting the Turkana Boy referred to in the programme.
With
Peter Kjærgaard
Director of the Natural History Museum of Denmark and Professor of Evolutionary History at the University of Copenhagen
José Joordens
Senior Researcher in Human Evolution at Naturalis Biodiversity Centre and Professor of Human Evolution at Maastricht University
And
Mark Maslin
Professor of Earth System Science at University College London
Producer: Simon Tillotson