The world population is approaching 8 billion people and it's not stopping there. So how will we address the needs of everyone on earth? Our guest this week Dr. Susan Hockfield says we out to look to biology for answers. You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'