Tuesday was the Republican debate, also known as seven men and one woman trying to stop Donald Trump. The Boston Globe Columnist Scot Lehigh (@GlobeScotLehigh) and Rep. Keiko Orrall(@KeikoOrrall) preview what's to come. 

Threats to the Los Angeles and New York City school systems. One shut down, the other did not. Who got it right? Is this the new reality? Should parents be afraid? We'll get answers from a pair of security experts, Former Watertown Police Chief Ed Deveau (@EdwardPDeveau) and Security Mom Juliette Kayyem (@juliettekayyem). 

And MIT Professor Sherry Turkle (@STurkle) discusses her new book, 'Reclaiming Conversation: The Power Of Talk In A Digital Age.'