"A decade ago, Dr. Alan Townsend's family received two unthinkable, catastrophic diagnoses: his 4-year-old daughter and his brilliant and vivacious wife developed unrelated, life-threatening forms of brain cancer. As he witnessed his young daughter fightduring the courageous final months of her mother's life, Townsend - a lifelong scientist - was indelibly altered. He began to see scientific inquiry as more than a source of answers to a given problem,...

"An astounding and inspiring look at the science behind tribalism, and how we can learn to harness it to improve the world around us. What do you think of when you hear the word "tribalism?" For many, it conjures images of bigotry, xenophobia, and sectarian violence. Others may envision their own tribe: family, friends, and the bonds of loyalty that keep them together. Tribalism is one of the most complex and ancient evolutionary forces; it gave us...