Cardiac Science At the Heart of Saving Lives ™ Cardiac Science designs, manufactures, and markets Powerheart® automated external defibrillators (AEDs) and related services that facilitate successful deployments. Our growing list of AED placements include today’s Fortune 500® businesses, physician offices, schools, restaurants, malls, airports, sports fields, and other public places to combat sudden cardiac arrest (SCA), the leading cause of the death in the United States.