200 countries, 200 years, 4 minutes

Do you wonder what the future will hold? Maybe the keys to the future reside in the past. Hans Rosling is a Swedish medical doctor who spent 20 years helping poor Africans get healthy. You might think after seeing famine firsthand he would be pessimistic. Dr Rosling defines himself as neither an optimist nor a pessimist; he is a “possiblist.”

Post to Twitter