A spill of bioactive ink made from ovarian cells led to the creation of paper made from organs and tissues, with various potential medical uses. The discovery happened, as so many discoveries do, by accident. Adam Jakus, then a postdoctoral researcher in materials science at Northwestern University, was working with the biological ?ink? his lab uses to 3D print ovaries. Standing beneath the lab?s fume hood, Jakus knocked over the container, spilling it onto the lab bench. By the time he went to clean it up, it had formed a solid sheet so strong it can be folded into origami. http://www.smithsonianmag.com/innovation/lab-accident-leads-bioactive-tissue-paper-180964511/?