For the first time, there was also trick-or-treating. The first few hundred costumed attendees received bags for collecting the Halloween candy placed at all the science stations. (Unfortunately, the bags, and the candy, ran out within an hour of the 10 a.m. start.)
Explore Salk was previously held in April. This year, it was decided to use the event to celebrate the Oct. 28 birthdate of Salk Institute founder Jonas Salk (1914-1995). Since Salk’s birthday falls so close to Halloween, Institute staff asked all kiddos to arrive in costume — preferably as their favorite scientist.