07-07-2019 CBS News Sunday Morning : Season 40 Episode 93

This week's edition of "Sunday Morning", hosted by Jane Pauley, features Allison Aubrey reporting on hamburgers that are made from plants instead of beef. Plus: Serena Altschul reports on "Beyond the Streets", the largest exhibition of graffiti and street art ever produced, and curator and ex-graffiti artist Roger Gastman; Luke Burbank attends Monster Jam University; Michelle Miller reports on fashion designer Dapper Dan's saga, that's been three quarters of a century in the making; Steve Hartman reports on a 97-year-old, who loves a hard day's work; John Blackstone ...