Chinampas are a farming system created by the Aztecs, an ancient civilization in central Mexico. These “floating gardens” have fed communities in what is now Mexico City for centuries. Built from lakebed mud to make fertile islands, chinampas are key to local agriculture. However, as the city grows, many farmers are moving away from chinampa farming to more profitable uses, like soccer fields. Cassandra Garduño, a farmer dedicated to preserving chinampas, says interest in this tradition is fading. Low prices for chinampa-grown crops have caused some families to sell or rent their lands, putting this cultural practice at risk. Despite these problems, efforts are being made to restore chinampa farming. Garduño is part of Chinampa Refuge, a group that promotes sustainable farming and teaches young people about the importance of chinampas. Ecologist Luis Zambrano’s research shows that chinampas can grow many crops without chemicals or extra irrigation, supporting wildlife and helping cool the city. Local authorities are working to protect these farms, a UNESCO World Heritage site, so they can survive into the future.