First of all... I love this Swedish man. His name is Hans Rosling, he is an academic, medical doctor, and statistician. This video shows how we as an entire society have become healthier and wealthier since the 19th century through to to the 21st.
If you're interested in more of his work, then look into this website, TED, which is also awesome for other informative and unique speeches into the development of humanity.
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