>> this could end up at the supreme court. affirmative action cases have been heard by the court six times since 1978. the most recent, the court upheu upaffirmative action. shep? >> shepard: thanks. scientists discovered a new shape and it's a bit more complex than circles and squares. lillian has the details. i don't understand how in 2018 they discover a new shape. >> until this week, mathematicians had never conceived of the scutoid. this is a picture of two of them. >> a scutoid? >> a scutoid. yes. this is a picture that shows each one individually. it's like if you had a prism, like maybe a pentagon and you took a chunk out of the side of