Instructional Video6:27
Be Smart

Are We Running Out Of Food??

12th - Higher Ed
If you tried to sum up the last 150 years or so in one image, a chart of exponential growth would be a good place to start. It shows that some things change faster over time. You could apply it to life expectancy. Or compound interest....
Instructional Video2:30
MinuteEarth

Which Is Worse: Underpopulation Or Overpopulation?

12th - Higher Ed
The human population of the world will soon peak – and then decrease – thanks to a combination of two quickly changing economic and educational trends.