The 48,000-year-old weapon that powered early human survival

After over 30 years of excavations deep within Sri Lanka's Beli-Lena and nearby caves, archaeologists uncovered puzzling traces left by Homo sapiens 48,000 years ago. Join palaeoanthropologist Ella Al-Shamahi as she deciphers butchered monkey bones and chipped bone arrowheads, clues to a lost technology that helped our ancestors survive in one of the most extreme environments on the planet.