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At Göbekli Tepe, the oldest known megalith in the world, Graham questions if simple hunter-gatherers alone could have built such an advanced structure.
S1E5 • Ancient Apocalypse • 2022 • Environment
Scientists are just now unlocking the amazing secrets of how rain is made; some raindrops form around micrometeorites from outer space, others are created by bacteria that float into the upper atmosphere.
S1E1 • Secrets of the Earth • 2013 • Environment
Dr Helen Czerski reveals how shifting ocean water distributes heat and nutrients around the Earth. This process is linked to almost every aspect of human existence, and the lecture explores how dependent we are on the ocean for weather, food supply and connection between land masses - as well as exploring what needs to be done by humans to maintain this vital element of the Earth's ecosystem.
S1E2 • BBC Royal Institution Christmas Lectures - Planet Earth: A User's Guide • 2020 • Environment
Human Planet tells remarkable stories of people who make their homes in the Arctic.
S1E3 • Human Planet • Environment
At a time when the Earth's surface is changing faster than ever in human history, watch cities grow, forest disappear and glaciers melt. In the ever-growing grey of cities one man is feeding thousands of parakeets; in Sumatra a female orangutan and her daughter face life in a forest under threat; while in Tanzania local people use satellites to replant a forest, securing the future for a family of chimpanzees. This is our home as we've never seen it before.
S1E4 • Earth from Space • 2019 • Environment
Graham visits Gunung Padang, an Indonesian archeological site, to find proof of a lost civilization — and the potential cataclysm that wiped it out.
S1E1 • Ancient Apocalypse • 2022 • Environment