KNX In Depth: Historic Supreme Court ruling on affirmative action and college admissions--More people are homeless in LA--Black holes make music while they squeeze everything

Is affirmative action over as we know it in universities? The Supreme Court makes a historic ruling today, saying it can't be used for admissions. We go In Depth.  The homeless count here in LA shows solving this problem might be harder than anyone thought.  Space is undulating all around us. We tell you what that means for the planet and our understanding of gravity.