Thoughts of school buses may conjure up images of big yellow vehicles full of yelling kids. But in Mendocino County, a school bus may be something else entirely different: a group of kids, led by an adult, walking en masse to school, picking up students along the way. The Walking School Bus is an initiative of the nonprofit Walk and Bike Mendocino. Interested participants or volunteer leaders, or those wishing to start a walking bus or a new route for an established bus, may contact Teel at Walk and Bike Mendocino: 467-3217.