The term 'COVERS IN GOO' can be solved by the crossword solutions TARS (4 letters) and SLIMES (6 letters). TARS is an acronym for 'Totally Automated Robotic System' and is a type of robot used in industrial settings. SLIMES are a type of bacteria found in soil that produce a slimy substance. They are often used in bioremediation, which is the process of using living organisms to clean up contaminated environments.