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The first United Nations population forecast came in 1958, when the world population sat just under 3 billion. Many were skeptical of the UN experts’ predictions that the population would double to roughly 6 billion by the year 2000, but their forecasts proved remarkably accurate. In this brief video, Professor Hans Rosling of the Karolinska Institute looks back at how UN population outlooks have played out in the past, and charts new predictions for the human population between now and 2100.
Video by Gapminder
Jocelyn Bell discovered pulsars. The Nobel Prize went to her supervisor
Animals and humans
A bluesy ballad tells the story of Old Bet, the first circus elephant in the US
In this 1975 lecture, the maglev train’s inventor deconstructs his ingenious design
Information and communication
There are many ways to make a flat map of the world – each of them a unique distortion
What is it like to clean the world for tomorrow while the rest of a city sleeps?
The nearly forgotten origin myth of Hawaii’s third-gender healers, as told by one
A whirlwind tour of Hong Kong’s high-rises is an awesome meditation on urbanity
Sports and games
After a day’s toil in California’s fields, labourers let loose in street races
History of technology
Remarkable historical footage is locked behind paywalls. It’s time to set it free