by Robert Marcos, photojournalist

Yesterday on the way to the airport, I told my friend Brad that a solution another friend provided – to help save the Great Salt Lake, had already been considered and was shot down because of its expense.

You see there’s solutions out there but many of them are unpalatable. Take dairy cows for instance – they’re cute, right? I like to imagine that my beloved Kerrygold butter comes from white cows with big brass bells around their necks, sniffing daisies and running free over miles of rich green fields in Switzerland. If you’re like me and you don’t want to know the facts, just walk away now and turn on the TV because Bob Ross is about to start painting.

The unfortunate fact is that dairy cows emit literally tons of pollution into the air, the groundwater, and soil. Worse – the forage they consume is using up the vast majority of our fresh water supply.

Precision Fermentation to the rescue

Just as vertical agriculture will be used in order to continue to produce some of our crops once the Colorado River’s gone, Precision Fermentation is gearing up to replace dairy cows. It uses genetically engineered microbes (like yeast or fungi) in bioreactors to produce exact, molecular duplicates of dairy proteins (e.g., whey and casein). This process provides revolutionary environmental advantages over traditional dairy farming – dramatically cutting emissions, water consumption, and land use while eliminating agricultural pollution.¹

Key Environmental Advantages

Land & Habitat Conservation: Cows require vast tracts of arable land for grazing and growing feed crops, which is a primary driver of deforestation. Fermentation takes place in vertical stainless-steel bioreactors, bypassing the need for pastures. This uses far less land and provides the opportunity to return millions of acres to natural ecosystems that could absorb massive amounts of carbon.

Drastic reductions in greenhouse gasses: Traditional dairy farming is a massive emitter of methane and nitrous oxide. Precision fermentation eliminates enteric fermentation (cow burps) and manure emissions, generating far fewer greenhouse gases than conventional dairy systems.²

The elimination of nitrate leaching: The urine from dairy cows pollutes groundwater with nitrates because it contains highly concentrated loads of urea, a nitrogen-rich compound. When cows urinate on pastures soil microbes rapidly convert this urea into ammonium and then into nitrate through a biological process called nitrification. Because pastures feature localized “urine patches,” the amount of nitrogen deposited drastically exceeds what the surrounding plants can absorb. The excess, highly soluble nitrate does not bind well to soil particles, causing it to leach downward through the soil layers during rainfall or irrigation and accumulate in the underlying water table.