Researchers at the University of Alabama are studying ways to help cut back on energy that heat and cools our buildings. This is how 1.5 million-dollar project will work. UA Engineering researchers think new and improved motion sensors could help reduce energy used for HVAC systems. Sources: Fox 6 (Birmingham), WDAM 7 (Moselle, Mississippi), NBC 5 (Memphis, Tennessee), NBC 12 (Montgomery), ABC 10 (Albany, Georgia), WTVM 9 (Columbus, Georgia), WTOC 11 (Savannah, Georgia), JARN