famine

How Zero Population Growth Works

In 1968, Paul Erlich published The Population Bomb, predicting coming famine and mass death. Erlich's predictions didn't pan out but his ideas launched a debate still raging today.

How Desalination Works

Why would people want to remove salt from water? To solve the world's water problem, that's why. Learn all about the efforts to desalinate H2O in cheaper and more efficient ways.