More than 10,000 blogs around the world are writing something about climate change on October 15 to mark “Blog Action Day.”

If you’re concerned about global warming, you may already have made small changes to reduce your own “carbon footprint.” You can significantly lower your energy consumption (and save money) with simple steps like hanging your laundry to dry and turning the thermostat down a few degrees in cold weather.

I also encourage you to get involved with at least one non-profit organization that works to reduce global warming. Whether you become an active volunteer or send a small donation once a year, your support will make a difference.

Here are 15 Iowa non-profits that deserve broad-based support. Although not all of them mention climate change in their mission statements, they all promote activities, land uses and public policies that would reduce greenhouse gas emissions.

1000 Friends of Iowa

Center on Sustainable Communities

Environment Iowa

Iowa Bicycle Coalition

Iowa Environmental Council

Iowa Global Warming Campaign

Iowa Natural Heritage Foundation

Iowa Interfaith Power and Light

Iowa Network for Community Agriculture

Iowa Renewable Energy Association

Plains Justice

Practical Farmers of Iowa

Repower Iowa

Sierra Club, Iowa Chapter

Trees Forever

In this comment thread, please recommend other non-profit groups working to reduce climate change.