Indonesia • episode "S1E2" • Equator with Simon Reeve

59:22

Liz Bonnin presents a controversial and provocative episode of Horizon, investigating how new scientific research is raising hard questions about zoos - the film explores how and why zoos keep animals, and whether they need to change to keep up with modern science, or ultimately be consigned to history. Should zoos cull their animals to manage populations? Liz travels to Copenhagen Zoo, who killed a giraffe and fed it to the lions, to witness their culling process first hand. They think it is a natural part of zoo keeping that is often swept under the carpet. Should some animals never be kept in captivity? In a world exclusive, Liz visits SeaWorld in Florida and asks if captivity drove one of their orcas to kill his trainer. But could zoos be the answer to conserving endangered species? Liz examines their record, from helping breed pandas for the wild to efforts to save the rhinos. She meets one of the last surviving northern white rhinos and discovers the future of this species now lies in a multimillion-dollar programme to engineer them for stem cells. Veteran conservation scientist Dr Sarah Bexell tells Liz the science of captive breeding is giving humanity false hope.

Horizon • 2016 • Nature

39:23

2nd prog in series about fossils. David Attenborough investigates some fossil mysteries - could pterodactyls fly? And why did trilobites have such good eyes?

S1E2 • Lost Worlds, Vanished Lives • 1989 • Nature

36:05

Across Asia, elephants must use their intelligence and understanding of us to adapt to the human world.

S1E4 • Secrets of the Elephants • 2023 • Nature

57:50

Todd trains hard to improve his body intelligence, visualization skills, and emotional intelligence before attempting a super-human feat. He faces his greatest fear - being chained, handcuffed and blindfolded underwater with only his radically improved brain to help him escape.

S1E3 • Redesign my brain • 2013 • Nature

49:57

Our body is a true time machine. It is a mirror of the history of the living world. If an engineer today had to fabricate the ideal human, he would most likely not design us the way we are currently made. He would go to the most logical, the most efficient, the most rational; and when you look closely, this is not always what characterizes us.

S1E1 • The Secret History of our Evolution • 2018 • Nature

20:57

A look at if fish really can predict earthquakes and why eggs are egg shaped.

S1E5 • Nature's Strangest Mysteries: Solved • 2019 • Nature