LOOKING BACK

1987: pop artist Andy Warhol died at a New York City hospital at age 58.

1997: scientists in Scotland announced they had succeeded in cloning an adult mammal, producing a lamb named “Dolly.” (Dolly, however, was later put down after a short life marred by premature aging and disease.)

2004: consumer advocate Ralph Nader announced he was running again for president, this time as an independent.