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Could the Slime in Your Dishwasher Help Combat Climate Change?

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Nicholas Vincent is a passionate environmentalist and freelance writer. He is deeply committed to promoting... Read More

Scientists are turning their attention to an unexpected place in the quest to slow Global warming: the hidden corners of our own homes. The Two Frontiers Project (2FP), backed by biotech company Seed Health, is enlisting volunteers across the United States to search for unusual microbial growth within their households. Their goal? To discover extremophile microbes that could play a pivotal role in reducing atmospheric carbon dioxide (CO2) or breaking down environmental pollutants.

Extremophiles are microorganisms that thrive in harsh conditions, developing unique properties that can be harnessed for environmental benefits. “These environments, though common, mimic the extreme conditions found in nature,” explains Braden Tierney, executive director of 2FP. “They reflect environmental changes that our planet may face in the future—including rising temperatures, heightened radiation, and increased acidification of oceans and soils.”

The project focuses on areas in the home with elevated temperatures or other extreme conditions, such as dishwashers, microwaves, air conditioners, solar panels, water heaters, and shower heads. Volunteers are asked to photograph any unusual microbial growth—think slime, crusty mats, or stringy formations—and provide details about their findings. If a sample piques the scientists’ interest, a DNA sampling kit is sent to the participant for further analysis.

This citizen science initiative aims to build an open-source database of extremophile microbes. The team hopes to identify organisms with carbon-absorbing capabilities similar to those found in nature. For instance, a previous 2FP expedition off the Italian island of Vulcano led to the discovery of a novel cyanobacterium that efficiently converts CO2 into biomass.

The potential applications of these microbes extend beyond carbon capture. Species that withstand high levels of detergent and salt—like those found in dishwashers—could be used for environmental cleanup in harsh conditions, such as removing heavy metals or petroleum from polluted sites. Thermophiles that survive extreme heat might help develop clean energy sources like hydrogen, which often require high temperatures for production.

While microbial carbon capture technology is still in its infancy, it offers a promising avenue for addressing Climate change. “It’s a very interesting alternative to get access to microbes with capabilities that aren’t yet known,” says Wilfried Weber, scientific director at the Leibniz Institute for New Materials in Germany. However, he notes that additional energy sources, such as sunlight or green hydrogen, are needed to make these technologies sustainable.

Ara Katz, co-CEO of Seed Health, emphasizes the importance of exploring every possible solution. “The urgency of the climate crisis means we must explore every possible approach,” she says. As scientists delve into the extremophiles hiding in our homes, we might find that the key to combating Climate change has been lurking in plain sight all along.