The Yellow Bike Project will host free community workshops this summer for the neighborhood planning areas that win the monthly Kill-a-Watt Challenge competitions.

The usual opportunities for local food and brew continue this week, plus TreeFolks launches its new carbon-offset program, the SOS Ordinance turns 15, and architect Mark Webber (who worked on the Hyde Park home featured on This Old House) hosts a talk on green building ...

Calling all faith-based organizations: The Chronicle has partnered with Austin Area Interreligious Ministries and Texas Interfaith Power & Light to bring you the newest Kill-a-Watt Mini Challenge. The church, synagogue, or other faith-based organization with the most energy savings will win prizes ...

A few weeks ago, we launched the first Kill-a-Watt Mini Challenge, posing the pressing question: What are daylight compact fluorescent lightbulbs good for (aside from making your kitchen look all eerie and blue)? Congratulations to Nick Littlejohn and Arthur Simon, whose answers we liked best. For their hard work, we gave them one dejected daylight CFL from our Kill-a-Watt Challenge czar's kitchen (pictured here) along with some concert tickets and other exciting things. See below to read what we learned about daylight CFLs from our challengers, and stay tuned for more prize opportunities.

Announced in February, Austin's new climate-protection plan aims, among many other things, to power 100% of Austin's city facilities with renewable energy by 2012 and make all city facilities, fleets, and operations carbon-neutral by 2020. Click here to read the plan; click here to read Chronicle coverage.