How Germany’s long-time leader, Angela Merkel, shaped the European Union. Then, a new understanding of dopamine’s effect on the brain has us rethinking addiction treatment. And, the founder of the Ig Nobel Prizes explains why recognizing silly scientific research is serious business. Also, on today's show: why the fertility industry has relatively little regulation; why girls and women outperform boys and men at all levels of education; a type of co-parenting that helps maintain stability for children while a couple divorces. (AP Photo/Matthias Schrader)