After 35 years of working in organic pest control, serial entrepreneur Pam Marrone is on a new mission to eradicate invasive species using alternatives to terrible chemicals. In particular, she’s on a quest for what she calls “the holy grail” – an eco-friendly herbicide that will zap out non-native weeds. “We have the team that can really execute it,” says Marrone, whose 2-year-old startup, Invasive Species Corp., known as ISC, is already helping the state of California find a sustainable way to deal with golden mussels, which clog waterways and damage water treatment facilities. “There’s nobody doing exactly what we’re doing with invasive species.”