Marketplace Morning Report features Alliance report on Improving Teacher EffectivenessA new report from the Alliance for Excellent Education shows that roughly 500,000 teachers leave the profession every year, with the biggest churn occurring in high-poverty schools. After investing in their training, how can we keep more young teachers from leaving the profession, and the urban schools that need them the most? Also, you know those tiny ads that pop up on your mobile phone? Does anyone pay attention to them? Well pretty much the answer is no. Leoneda Inge reports on what a little nudge from your phone might actually get you to buy.