Donating their time at La Brea Tar Pits

Volunteers get their hands dirty – and like it – at Los Angeles’ La Brea Tar Pits.

Every Thursday morning, Judith Sydner-Gordon puts on the same simple uniform: khaki cargo pants and an electric orange T-shirt with a sabre-toothed cat emblazoned across the front. Recently, she added an accessory, a miniature canine skull that dangles from a silver chain around her neck.