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1:35
A small piece of insulation caused catastrophic damage.
3:06
This form of bear hunting took nerves of steel.
2:59
Inside the Tunnel of Bones, a macabre Neanderthal mystery unfolds.
3:05
It became the basis for most written languages, beginning 4,000 years ago in the Sinai desert.
2:47
What archaeologists found here reveals one of the biggest turning points in human history.
2:49
They're older than King Tut, Ötzi the Iceman, and even the ones found in the Atacama Desert.
4:30
A dangerous spacewalk, a toxic leak, and a breathtaking view of Earth.
2:10
What is this whale skeleton doing in the Egyptian Sahara Desert?
2:54
These monkey bones showed that early humans could thrive in the rainforest.
2:41
Early humans may have brought offerings to this enormous stone snake.
2:50
In a remote cave, in North West Africa, a chance discovery uncovered some mysterious human remains.
2:17
These giant stone heads were not dragged on sleds, as once thought.
