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Video- becoming human - Nova.docx

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Environmental Science
Nick Eyles

Video NOVA Becoming Human Part 1 Millions of years ago we were apes living in Africa More than 6 million years ago we took that first step to separate from the apes 3 million years ago we see the routes of our big brain begin to take hold in a tiny creature more like a chimp than a human The frontier of human evolution is really being brought to this sharp edge We now know that many different like species lived together on the planet until one day there was only us Homo sapiens were the most adaptable creatures on earthMillions of years ago on the planes of Africa an event happened Apes walked on four legs stood up and walked on two Eventually this change in posture is a change in their brains In the Sahara desert a fossil called tumi maybe the secret on how we first walked up The Afar North Eastern Africa it is part of the great rift valley They found a fossil which was about 33 million years ago and called it Salam which means peace is Etheopian Austral opithecus Afarensisa small chimp like creature who walked on two legs Salam was like Lucy who was discovered in the 1970s by Don Johanson Salams head is solid rock held together by soft mesh sandstone They figure out how old she was when she died by her adult teeth growing inside the bone as seen in a CT scan Salam died at age 3 Unlike apes these creatures walked upright From the waist down Lucky was like us but from the waist up she was all ape and the goes with SalamAcross the border from Kenya is a vast volcano and burning desert Before Lucky and Salam Africa was a wet and tropical environment covered with rainforest Then Africa started to dry up and the rainforest began the shrink The great valley was a mosaic of different valleys As the environment changed so did our ancestors Bipedalismwalking on two legs This is one of the
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