What science can tell us about Vikings

Recently, a three-year-old study resurfaced on the internet which made the feminists all squeal out in joy. The study had found, through osteological examination of skeletons, that Viking graves containing swords and shields

Why do we help others?

Altruism is the act of selflessness, the antonym of selfishness. What drives an animal to jeopardize its own safety for the well being of another?