The Science of Charitable Giving
A woman makes a donation into a Salvation Army kettle outside a Giant grocery store November 24, 2012, in Clifton, Virgina. Bell ringers William Schmidt (L) and his grandson Bubba Wellens (C).
( PAUL J. RICHARDS/AFP / Getty )
( PAUL J. RICHARDS/AFP / Getty )
Produced by Mythili Rao
