Events

Join us for a free screening of the award-winning documentary “Over Troubled Waters”, exploring the fight to stop the Delta Tunnels project and the search for a more sustainable water future for California

Following the film, Gary Prost, representing

What happens in Sacramento does not stay in Sacramento! The climate bills moving in Sacramento in 2026 affect us all—impacting our air, our wallets through energy bills and higher insurance costs, and our communities as we harden against firestorms a

The workshop is geared toward emerging leaders and advocates newly entering the bike movement.

The workshop will cover topics such as: the history of bike advocacy, how to get organized, effective political engagement, making the case, coalition buil

Our county has over 75 species of butterflies that can be found throughout the year. Join naturalist Michael Marchiano for a lecture and presentation showing photos of over 60 of them. Learn the host plant for their catepillars and many other fascina

Acterra is proud to present the East Bay Green@Home Tours 2026! This is a FREE, community-powered event that invites the public to explore innovative, electrified homes. Explore homes throughout Alameda and Contra Costa Counties, ranging from new con

Big Oil and gas corporations have been profiting while our communities pay the price. But together, we can make a difference! Join us in Dublin on June 6 for the Tri-Valley Polluters Pay Town Hall—an energizing morning of inspiration, action, and com

Discover the beauty and benefits of water‑wise gardening! Visit a nearby participating garden for expert tips, tours, and resources. Learn about attracting pollinators, blooming native plants, growing food, large and small garden designs, building he

Kick off summer at Small World Park with live performances, arts & crafts, hands-on activities, community resources, and fun for the whole family! 

Kids 14 & under and Seniors: $3
General: $6

Visit www.pittsburgrec.com for details.

May 14^th is Bike to Work / Wherever Day. Dust off your bike, fill the tires, grab a helmet, and hit the road on two wheels. Join thousands of cyclists around the Bay Area on May 14^th by using a bike to get to work or wherever you need to go. BTWD is

A team working in an informal settlement in Kisumu, Kenya, is turning human excreta into clean, granular fertilizer to improve sanitation, agriculture, and the health of Lake Victoria. Learn from Cornell University professor Rebecca Nelson how her te

This is the 4th Bay Delta Bioregional Regeneration Unconference. Each gathering has deepened our network and sparked new collaborations across the region - and we keep coming back because something real happens in these rooms.

At previous unconferenc

The Ridge-to-Ridge Challenge is an annual fundraiser supporting Sustainable Contra Costa and its youth program, Sustainable Leaders in Action (SLIA). Each year, high school and college students collaborate to raise awareness about climate issues and

Turn your waste into wonder and make a splash for Earth Month! 

Introducing the Earth Month Art Challenge, inspired by the documentary “The Story of Plastic.” We invite creatives of ALL AGES to transform recycled materials into meaningful works of ar

Worm castings make great fertilizer! In this free online workshop you’ll learn how to create your own worm compost. Vermicomposting (“vermi” is Latin for “worm”) is the process of using worms to break down organic food waste into nutrient-rich soil.

See Your Neighbors’ Native Plant Gardens and Electrified Homes!

Join the free Bringing Back the Natives Garden Tour and Green Home Features Showcase in-person Tour from 10 am-5 pm on May 2 & 3, when nearly seventy homeowners in Alameda and Contra Cos

Design a professional greywater system for your home (or your client’s) to save water and grow a beautiful landscape.

Greywater Design Mastery is a comprehensive greywater program to teach you how to design professional, well-functioning greywater ir

Get ready to peek into the fascinating and little-known past when city dwellers kept their local waters clean by recycling and reusing poop. We’ll visit sand toilets of ancient Egypt, earthen-plaster toilets of the Mali empire, nutrient recycling sys