This roundworm can survive weeks without eating thanks to a coping mechanism similar to humans. When the body goes without food, it resorts to living on fuel from within. Duke biologist Ryan Baugh and graduate student Jonathan Hibshman found that starving worms make this metabolic shift thanks to a protein called daf-16, which triggers their bodies to make a sugar called trehalose as an alternative fuel. In this image, orange marks areas that make more trehalose during starvation. The researchers suspect the sugar is made from fat in the gut and then shipped to other organs as backup energy.