By 2050 there will be another 2.5 billion people on the planet. How to feed them? Science's answer: a diet of algae, insects and meat grown in a lab

In 2008 and in 2011, the world was rocked by riots and by revolutions coinciding with spikes in food prices. Now researchers are projecting that by 2013, food prices will soar to unparalleled heights, causing widespread hunger in the most vulnerable populations and social unrest, with an enormous potential for loss of human life.

It should come as no surprise to learn that the world is over reliant on petroleum, from the gas we put in cars to the plastic bags we take groceries home in. We're still trying to figure out how to make electric cars popular, but scientists at Utrecht University in the Netherlands may have solved the plastic bag half of the problem, creating an innovative new process that turns plant material to plastic.