How to grow food without light

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Researchers have come up with an exciting new idea called “electro-agriculture” that could revolutionize how we grow food.

Instead of relying on sunlight and photosynthesis, this approach uses electricity and carbon dioxide to grow plants.

Photosynthesis, the natural process that plants use to convert sunlight and carbon dioxide into food, is slow and requires a lot of resources.

This makes traditional farming less efficient, especially as the global demand for food continues to grow. Electro-agriculture offers a faster, more efficient solution.

The system combines carbon dioxide electrolysis with biological systems, which could dramatically increase food production efficiency.

One big benefit is that it could cut the need for farmland in the U.S. by nearly 90%.

With electro-agriculture, crops could be grown in urban areas, deserts, or other inhospitable places without the need for sunlight or pesticides. Farmers could also use fertilizers more effectively, reducing waste and environmental damage.

Professor Feng Jiao, a chemical engineer from Washington University in St. Louis, is leading this research.

His team is working to perfect the process of converting carbon dioxide into acetate, a key ingredient in this new system.

Plants could be genetically modified to use acetate as their main source of energy, making indoor farming much more efficient.

The ultimate goal is to develop plants that can completely rely on acetate instead of photosynthesis.

If successful, this could free up large amounts of farmland for conservation and environmental restoration. This change could also help trap carbon naturally, helping to fight climate change.

In addition to food production, the electro-agriculture system could be used to create fuel or biodegradable materials.

It could also support the production of high-value crops like lettuce and tomatoes, as well as lab-grown meat and proteins like eggs and dairy through precision fermentation.

While there are no financial incentives to replace traditional farming just yet, this technology could stabilize food markets, prevent famine, and provide food in harsh environments.

However, researchers emphasize that this new approach must be developed responsibly. It is crucial to ensure that it doesn’t worsen inequalities in the global food system.

“This technology has the potential to reinvent agriculture,” the researchers wrote. “But it must be thoughtfully deployed to benefit everyone.”

This groundbreaking work is supported by the Bill and Melinda Gates Foundation and was recently published in the journal Joule.

Source: Washington University in St. Louis.