Evolution movie 2.3.12

Becoming Human part 1
Pay attention to:
Timeline of evolution
Where the fossils are being found and what piece of human ancestry do they represent?
Conditions that led to the evolution being described.

-Tumai 200 million year old fossil
-The afar, north eastern Ethiopia is where anthropologist are searching for fossils and answers of how we got here
-face of a baby is found (skull embedded in sand) not a chimp, 3.4 million years ago volcanic ash, fossil is younger than that, child 3.3 million years ago, calls the baby skull peace "silam" , shoulder blades almost complete spine and foot were also found, died at 3 because of her adult teeth were in her gums just waiting to come in
-silam has chip like shoulder blades but from the waist down has human like features like Lucy
-fossils tell a story bout the landscape
-was tropIcal not desert like
-bipedalism: walking on 2 legs
-theory of why bipedalism happened to the species (apes): stood up to see above high grass, pick fruit off of tress, saving energy
-chip needs more energy to walk on two feet
-6 million years ago humans derived from chips
-1990s the fossil record was blank but than, 1997 French anthropologist (Michel brunet) went 1600 miles west to find the different fossils
-26th expedition in 2001 found a smash skull
-tumai is what the skull is called
-tumai walked upright because of his eyes. The back of his skull isn't the back of a gorilla. If he walked on all fours than his would face down but if the eyes are upright than the species walked on two feet
-by 3 chips are fully grown and it takes a decade for human brain to fully grow.
-measuring layers they can tell when the climates changed
-silan and Lucy couldn't adapt to the climate change but homo habilis could
-climate change is how our ancestors evolved, they had to adapt to what and how the climate changed
-kangaroos, birds, kangaroos
-Achilles tendions are common with other species that are with bipedalism
-90% was grown for chips brain by age 3 and silam was growing slower
-cop brain deep furrow and small cortex
-the furrow moved back making room for neocortex the thinking part of the brain started to evolve
-first stoned tools: broken in a particular way
-homosexual habilis were the fossils that used stone tools
-Kenya, rocks had environmental change
-huge rock formation made the diatoms (shells of rocks showing that it was once a lake)
-More efficient when we run instead of walking, evidence that our ancestors traveled 60-100 miles a day
-once they became upright our brain became bigger because we were using our hands, brain sized stayed the same because the climate was stable as well
-climate changes, the area gets dried up, so the species need to adapt quickly to become familiar with the new area
-Stone tools are easily preserved
-bipedial and than brain size were the first 2 major theories that started theories about how humans became human