 This research paper examined the use of microbially induced calcite precipitation, MICP, for repairing cracks in asphalt concrete. It was found that MICP can be used to successfully repair cracks of varying widths, and that the addition of fibers further increases the strength of the repairs. Additionally, the repairs were shown to be environmentally friendly, as they did not cause any adverse environmental impacts. This article was authored by Ling Fan, Jing Hong Jing, Xu Kuan Ping, and others.