Cooperation in animals has long been a major focus in evolutionary biology. In particular, reciprocal altruism, where helpful acts are contingent upon the likelihood of getting help in return, is ...

Is it just me, or do we all find ourselves, every now and again, feeling like we need to apologize? In my life, this often arises in situations like the following: “Sorry I was late – I really ...

My daughter is 15 and my son is 12. They both have Instagram accounts and are not afraid to use them … Parents are often concerned about the large-scale and frequent use of social media by their ...