Worm composting is fun. No doubt about it. But worm compost combating global climate change? Sound like a stretch? Read on.
Worm Composting Reduces Methane
Worm composting keeps organic waste out of the landfill. Okay, that’s cool, we’re saving space in the landfill.
But what’s more is that rotting waste in the landfill produces methane gas. According to the U.S. EPA, landfills are the 2nd largest producer of methane gas. Methane is a greenhouse gas 20 times more potent than CO2. Furthermore, methane levels in the atmosphere are 148% higher than they were in 1750.
Decreasing CO2 emissions is critical, but let’s not ignore methane. Methane gas is removed from the atmosphere in only 10 years, so putting in the effort now will pay off quickly.
Worm composting keeps organic matter out of the landfill where it would decompose in such a way as to produce methane. Worm composting is an aerobic process and produces no methane.
Worm Composting Sequesters Carbon
Worm composting creates organic matter and organic matter such as compost and humus sequesters carbon. That is, instead of being released into the atmosphere by rotting or burning, the carbon gets tied up.
Using compost and worm compost on our agricultural land would turn untold acres of farmland into a giant carbon sink.
Adding worm compost to soils of any kind makes the soil more fertile allowing plants to grow bigger and more plants to grow. Plants sequester carbon in their biomass, so more plants equals more carbon sequestration.
So, making worm compost sequesters carbon, and then growing things using the compost sequesters carbon, a double whammy.
Worm Composting Strengthens Partnership
Worm composting changes our perspective and strengthens our partnership with the earth. By employing the lowly worm and directly observing the amazing role it employs in the fertility of the earth we are changed. We no longer see a banana peel as something that gets thrown in the garbage and trucked off to parts unknown. It is no longer waste. It becomes worm food.
After using worm compost in our own gardens and yards we directly observe what fertile, healthy soil is. We can no longer drive by a plot of abused land, whether it be overgrazed, over tilled, stripped and left barren, and see it as negligible.
We begin to see ourselves as we really are, caretakers of this planet. Caretakers of the planet wouldn’t allow the delicate balance of the atmosphere to be compromised. That’s the 3rd way worm composting combats global climate change.

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Great Blog, Cassandra!
Also, less waste in your trash can=less trash truck trips needed by City Municipal Trash Trucks=less fossil fuel use and air pollution. Most landfills are many miles away from urban residential centers.
Fact: The Environmental Protection Agency estimates that each U.S. resident throws away 7.2 ounces of food waste each day. Dallas County had an estimated 2008 Census Population of 2,412,827 people. That population would produce 1,085,772 lbs. of food waste a day! Families or individuals that vermicompost remove that waste stream from the landfill.
Fact: A typical cubic yard of residential waste weighs 225 lbs/cubic yard. A typical garbage truck can hold 25 cubic yards of waste. If all food waste was vermicomposted on site, 193 garbage truck trips could be reduced every day in Dallas County.
I am walking and driving by hundreds of bagged leaves on the curb this week, I shake my head and mutter under my breath….”it’s a sin.”
Thanks for the comments, Heather, and thanks for the concrete numbers. You prove that what may seem like not so much household waste really adds up fast. By worm composting in our homes we are truly helping to reverse global climate change.
i compost as much as i can.. i have lots of worms so i guess it’s working just great… i’m hoping to start a small worm farm (bins) but it’s been far too cold…
Linda, don’t forget that it’s easy to keep worm bins in the house, basement, or garage. They don’t smell, I promise!
My worm bin are outside, and there are lots of fruit flies, and some other ” grubby” looking things. It Doesn’t smell, but I don’t want the other residents of the bins flying around the house.
Mary
Mary, keep a layer of dry paper on top of the bin to keep fruit flies and other flies from laying their eggs in the bin. And try the ultimate fruit fly trap in the bin : http://wormdiaries.organic-raised-bed-gardening.com/2011/03/11/the-ultimate-fruit-fly-trap/
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