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As people across the United States sit down for holiday meals, filling their bellies with everything from mashed potatoes to latkes and tamales,听a question may come up: Where does all this food come from?

Now, a new interactive map developed by researchers at CU Boulder and , a food climate initiative from the nonprofit organization Earth Genome, sets out to answer that question. It鈥檚 called , a 鈥渄igital twin鈥� of the country鈥檚 sprawling and potentially fragile food system.

With Food Twin, users can look up their home county to see how much of 25 critical food crops their local regions both produce and consume. Those food staples include everything from wheat to tomatoes and peanuts, grown both in the U.S. and overseas. The map similarly tracks the flow of food across the country, following highways from sites like Kern County, California, to Denver, Chicago and beyond.

Food Twin also shows just how precarious that network might be, said Zia Mehrabi, a data scientist at CU Boulder who helped to spearhead the new tool. The map presents what he calls a 鈥渇arm to fork鈥� view of how increasingly severe droughts and heat waves may affect the nation鈥檚 food supply.

The United States depends on a little more than 5% of its counties to produce half of the crops consumers eat.

鈥淚t鈥檚 risky,鈥� said Mehrabi, assistant professor in the Department of Environmental Studies. 鈥淚t really raises the question of whether the sources of food for many locations are as diverse as they should be.鈥�

Food Twin draws on a heaping plateful of data鈥攂ringing together for the first time information ranging from satellite images of farmland to food availability surveys, census statistics, logistics computer models and more.听

In baby直播app, for example, Boulder County relies on locations like Adams County, baby直播app, and Hockley County, Texas for its crops. New York, in contrast, depends on Putnam and Seneca counties in Ohio and imports via Renville County, North Dakota, and more. 听

Mehrabi, who has spent years studying crop production around the world, said that the map makes him see food in a different way.

鈥淚t鈥檚 one thing to have these conversations and hear anecdotes about how climate change is impacting food systems through cascading impacts down supply chains,鈥� Mehrabi said. 鈥淚t鈥檚 another thing to see that data right in front of you. It really hits home.鈥�

Protecting your food

He and his colleagues launched Food Twin just ahead of the , or COP28, in Dubai.听

The world鈥檚 food, Mehrabi noted, faces an uncertain future in the decades to come. According to the U.S. Global Change Research Program, the number of heatwaves affecting the country鈥檚 largest cities has doubled since the 1980s. Droughts and wildfires are also on the rise鈥攁nd all of that can take a bite out of the nation鈥檚 food supply.

Kern County, for example, is a monster of agriculture, producing nearly 600 billion calories鈥� worth of crops every year, according to the tool. In the coming decades, however, a single extreme heat wave could wither that production by as much as 8% or more.听

On the consumer side in Boulder, a single severe drought in the U.S. might reduce the supply of crops coming into the county by 2.5% That amounts to more than 2.4 billion calories lost.

But there鈥檚 a lot that consumers and leaders in the U.S. can do today to shore up the nation鈥檚 food supplies, Mehrabi said鈥攆rom taking action to combat climate change to diversifying the supply chains feeding local communities.

He and his colleagues at Earth Genome are already working to expand Food Twin to the entire globe. He hopes people will use the tool to make pro-active plans for increasing the world鈥檚 resilience under climate change.

鈥淚 think Food Twin can be useful for not just knowing where your breakfast comes from,鈥� Mehrabi said, 鈥渂ut also for changing the conversations we鈥檙e having about food.鈥�