Some say there are two types of concrete – cracked and on the brink of cracking. But what if when concrete cracked, it could heal itself? We’re part of a team of materials scientists and microbiologists that has harnessed the power of bacteria to create biological fibers that initial results suggest can heal cracks in concrete. We’re working on a technology that, if we work out the kinks and manage to bring it to the market one day, could extend the life span of concrete. Cracking concrete Pictu...