S8 Ep430: Thomas Halliday describes the Pleistocene Mammoth Steppe, a vast grassland ecosystem stretching from Europe to Alaska inhabited by megafauna like Arctodus, then explores the Pliocene in East Africa where mosaic environments supported early human ancestors
S8 Ep430: Thomas Halliday describes the Pleistocene Mammoth Steppe, a vast grassland ecosystem stretching from Europe to Alaska inhabited by megafauna like Arctodus, then explores the Pliocene in East Africa where mosaic environments supported early human ancestors  
Podcast: The John Batchelor Show
Published On: Sun Feb 08 2026
Description: Thomas Halliday describes the Pleistocene Mammoth Steppe, a vast grassland ecosystem stretching from Europe to Alaska inhabited by megafauna like Arctodus, then explores the Pliocene in East Africa where mosaic environments supported early human ancestors like Australopithecus.