Today we talked about population. The population of the world has gotten far bigger than it had been 12,000 years ago. It took us about 10,000 years to get to 1 billion people. It took us about 123 more years to get to 2 billion then it was 33 years. Then by 7 billion it took us only 12 years. There are currently 7.5 billion people on the planet right now. That number grows by 200,000 a day
1 hellenistic: the blend of greek Indian and middle eastern culture. Alexandria: major city on the nile and was a center of knowledge. Euclid: was a respected mathematician and created the basics of geometry. archimedes: was the scientist that estimated the value of pie and explained how the lever works. colossus of Rhodes: a one hundred foot tall bronze statue. 2 geometry had the biggest achievements as we built on these ideas and use them in many other subjects. 3 when traders came to Alexandria they brought their culture with them. Alexandria learned from them how the lived and their knowledge to mix in with the rest of what they learned. 4 He had made up rules of basic geometry so astronomers used it to estimate the circumference of the earth.
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