Clash of cultures, religious tribes, brands create tribes, every corporation is many tribes. Tribal inequality of wealth risks global instability, protest movements and new terrorist groups. Tribes give music, language, poetry, literature, teams, friends, neighbourhood, family, teams, communities and nations. Most businesses are tribes of tribes. Niche markets and tribalism. Tribal leadership -- leading thousands of people, motivation, inspired workers, higher productivity, people movements.

Every class and school is a tribe. Power of tribalism in future world. Need for students to understand tribalism as force in family, community, nation, culture, brands, identity, belonging. Every group creates own tribes. Religion as tribal force. Future of traibalism. Clash of cultures. Christianity and Islam. Understanding other people's culture and tribes. Links of tribes to protest movements, activists and terrorist groups.

Civil wars and ethnic conflicts have brought the world incredible suffering, but Stefan Wolff's figures show that, in the last 20 years, their number has steadily decreased. He extracts critical lessons from Northern Ireland, Liberia, Timor and more to show that leadership, diplomacy and institutional design are our three most effective weapons in waging peace.

Many people think the lines on the map no longer matter, but Parag Khanna says they do. Using maps of the past and present, he explains the root causes of border conflicts worldwide and proposes simple yet cunning solutions for each.

David Logan talks about the five kinds of tribes that humans naturally form — in schools, workplaces, even the driver's license bureau. By understanding our shared tribal tendencies, we can help lead each other to become better individuals.

Dave Logan is a faculty member at the University of Southern California (USC)'s Marshall School of Business, a best-selling author, and management consultant.

Chimamanda Ngozi Adichie a renowned Nigerian novelist was born in Nigeria in 1977. Chimamanda is the author of Half of a Yellow Sun, which won the 2007 Orange Prize For Fiction; and Purple Hibiscus, which won the 2005 Best First Book Commonwealth Writers' Prize and the 2004 Debut Fiction Hurston/Wright Legacy Award. In 2009, her collection of short stories, The Thing around Your Neck was published

Using #LikeAGirl as an insult is a hard knock against any adolescent girl. And since the rest of puberty's really no picnic either, it's easy to see what a huge impact it can have on a girl's self-confidence. We're kicking off an epic battle to make sure that girls everywhere keep their confidence throughout puberty and beyond, and making a start by showing them that doing it #LikeAGirl is an awesome thing.

Nobel Peace Prize winner Leymah Gbowee has two powerful stories to tell -- of her own life's transformation, and of the untapped potential of girls around the world. Can we transform the world by unlocking the greatness of girls?

AERC Biannual Research Workshop: Gender and Economic Development in Africa