The hazard to spacecraft posed by artificial debris in orbit, though still low, is growing and requires international attention, according to a new National Research Council (NRC) report. What's more, the problem needs to be addressed while it is still manageable, the report says. First, the NRC report suggests that spacefaring nations work together make better spacecraft hazard assessments by filling in data gaps on the effects of collisions between orbiting objects and on the amount and sources of debris in orbit. Other steps include making spacecraft designers more aware of protection methods. While removal of existing debris from orbit is technically and economically infeasible, according to the report, international efforts should focus on preventive measures.