Charles Darwin's theories of natural selection suggest that being mean, deceptive and selfish are the route to success in life. But, actually, science suggests that on a personal level, it may pay to be nice.
This video by Brit Lab explores some of the science that suggests why being the good guy is the way forward. It may not always pay off in the short term, but, as you'll see, in the long-term co-operation can yield much good. [Brit Lab]