Has Humanity's Explosion Become a Population Bomb?

The world's population has exploded over the past century, growing from less than 2 billion to 7 billion people. And it's not stopping. The U.N.'s current projection is that humanity will number 9.3 billion individuals in 2050, and then hit 10.1 billion by 2100. Meanwhile, our energy resources are dwindling and… » 1/09/13 2:23pm 1/09/13 2:23pm

What does a world of 7 billion people look like?

Today saw the world's human population pass 7 billion for the first time ever — it's a huge landmark that's almost impossible for our limited brains to encompass. Luckily, National Geographic has been doing a year-long series about the growing population, and they've gathered some of their most arresting images, video… » 10/31/11 5:30pm 10/31/11 5:30pm