All the way back in 240BC, a Greek mathematician named Eratosthenes calculated the Earth’s circumference using nothing but a stick in the ground. How did he do it? Check out the video below from Business Insider for the answer.
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Sharif Jameel is a business owner, IT professional, runner, & musician. His professional certifications include CASP, Sec+, Net+, MCSA, & ITIL and others. He's also the guitar player for the Baltimore-based cover band, Liquifaction.