Science For You: Of mice and men — and brain science, and huge numbers
(World News Science)

It has been a sad time after the unfortunate death of George Floyd. Our society needs some way to deal with racial bias as the future of our country depends on our ability to incorporate a variety of cultures that can work together. One of the genetic and evolutionary issues we all need to understand is the existence of tribalism in our species and many others. Tribalism is likely the result of kin selection that favors your help of people who are related to you. Darwin first suggested this in his famous book, “On the Origin of Species,” in 1859. He noted that honey bees are mostly sterile except for their mother whom they help in...