. >> joining in the studio is davin wentworth, cofounder of ecosf.g the vegetables that you brought in today. these are fantastic but before we talk about those tell me about the program. >> it's ecology center of san francisco and we're a nonprofit that cultivatescould logical awareness. we do it through a few different programs. our main program is school farm which is a production farm at a high school in san francisco. we have students that supported the curriculum through working at the farm but a local community event called bigger valley and encouraging to bring local produce from the farmer's market. we bake bread and we eat and talk about important issues. we have local experts come in and teach urban sustainability skills. >> bare looking at great pictures of all the activities that you are doing. what is this. >> this is a building of earth building at one of the events. its community participation experience the try on provide culture change through hands on activities. >> how do you encourage people to start their own gardens? >> potluck