Dr. Neil deGrasse Tyson sits down with actor, author and activist George Takei to discuss how the once-futuristic scenarios in "Star Trek" relate to many of today's current moral and social issues.
Dr. Neil deGrasse Tyson sits down with actor, author and activist George Takei to discuss how the once-futuristic scenarios in "Star Trek" relate to many of today's current moral and social issues.
