A sobering reminder of why the global climate change protests are taking place

A sobering reminder of why people around the world are protesting climate change: In 1900, the burning of fossil fuels produced some 2 bn tonnes of carbon dioxide. Now, they count for almost 20 times that amount, this chart from the Economist shows. Add to this the accessibility of other resources, the ability to manufacture plastic, and the global population explosion, and you can see how carbon dioxide emissions have shot up over the last 70 years. Mns of people around the world demonstrated on Friday in what observers are calling the largest-ever climate change protests.