Total solar eclipse reminds us "we're all on this rock together," scientist says

Columbia University astronomy professor Dr. Janna Levin joins CBS News to discuss Wednesday's total solar eclipse, saying it's a reminder that humans share this Earth together and "we're all part of something larger."

Columbia University astronomy professor Dr. Janna Levin joins CBS News to discuss Wednesday's total solar eclipse, saying it's a reminder that humans share this Earth together and "we're all part of something larger."