Altruism: Genetic or Cultural Evolution?

(PhysOrg.com) -- The origins of altruism, the willingness to make personal sacrifices for the benefit of others often unknown to us, has perplexed evolutionary social scientists and biologists for years.

Study examines what drives good deeds

Every day, we face a series of opportunities to do the right thing. Sometimes we seize those moments; other times, we don't. So, why do we make these choices, and what drives some people to take the moral high ground?