The story of the Monarch butterfly has its lessons to teach us about the loneliness epidemic in America. At the same time as millions of Americans say they need more green spaces and feel disconnected, the natural world also needs us. Nature needs us, and we need nature. It's a remarkable thing that happens every fall, when the Monarch butterfly that we all love migrates south, along the western and eastern corridors. The western migration is about 300 miles, to the Pacific Coast of California. The eastern migration is as far as 3000 miles, from Canada all the way to Michoacan, Mexico.
Miguel Angel Cruz Dominguez tells the story of El Rosario, one of the places the Monarch overwinters in the Sierra Campanario sanctuary, a place that's been cared for and nurtured for many generations by people who have many green spaces. Scientists were unaware of where the Monarchs went for the winter until local people helped them in 1976 (the work of Fred Urquhart, published in National Geographic: "Found at last: the monarch's winter home"). Silent Spring was published in 1962, alerting Americans to the dangers of new, modern chemical "miracle" compounds, that today continue to cause declines in the Monarch population. The book described how DDT had "entered the food chain and accumulated in the fatty tissues of animals, including human beings, and caused cancer and genetic damage."
The chemical industry was not happy. An executive of the American Cyanamid Company wrote: "If man were to faithfully follow the teachings of Miss Carson, we would return to the Dark Ages, and the insects and diseases and vermin would once again inherit the earth." After a review of the science supporting the claims in Silent Spring, in 1972 the EPA banned DDT, in its second year as a new government agency. 4 years later, the overwintering home of the Monarch was published in National Geographic.
What scientists know today, with a more holistic understanding of ecology, is that beneficial insects - like lacewings and lady beetles - help protect our food supply by attacking insects that harm food crops, for free, so long as we provide the habitat they need. It's a win-win relationship. We give, and we receive. Most of our food relies on the work of pollinating insects, who give us an economic value of $15 billion annually and only ask for habitat in exchange, at a time when over 20% of pollinators are at elevated risk. Ecofriendly lawn care that uses the best science available today is one way to avoid causing harm to local wildlife populations. When we give what nature needs from us, we can expect all of our needs to be met.
Although a lot of work has been done the past 50 years, there's still a lot more to do. During the 2023-2024 winter, the World Wildlife Fund and other researchers documented a 59% decrease in Monarch overwintering areas, declining from 5.5 acres the year prior to just 2.2 acres. Widespread use of herbicides along the migration corridor, from Mexico to Canada, continue to reduce the population of milkweed plants that the Monarch relies on to feed its young. With less food, a much smaller population actually arrives in the fall in Mexico.
In July 2025, a Xerces Society press release drew attention to the impact that insecticides continue to have on monarch butterflies in the western corridor. The western monarch population has declined by nearly 95% since the 1980s, with fewer than 10,000 individuals counted in 2024. Conflict over land being withheld from timber logging (for the Monarch Butterfly Biosphere Reserve, a UNESCO world heritage site) led to two community leaders being killed in 2020. DDT was banned nearly 50 years ago, and yet in 2023 major chemical companies in the US that manufacture "forever chemicals" (PFAS) agreed to over $11 billion in settlements. Forever chemicals have now been found in the environment all over the world. The Centers for Disease Control and Prevention has found the chemicals may be in the blood of 97% of Americans. And over 1 in 5 Americans say they feel disconnected from others, and in need of reconnection with the natural world. Nature needs us, and we need nature.