On any given night in America, half a million people are homeless. A quarter of them are in California. A startling 55,000 in Los Angeles alone.

In this Sunday Night story, we explore the impact of Chicago's gun violence epidemic by profiling the Orr Academy High School boys basketball team on the city's west side.

In Philadelphia-- where fewer than half of black males pursue higher education-- Boys' Latin Charter School sends more than 90% of its majority black graduates to college.

In October of 2015, more than 55 women had accused entertainer Bill Cosby of sexual assault. We gathered 27 of those women together in one room for an exclusive Dateline NBC interview about their allegations.