microbes Archives - When We Talk About Animals

Ep. 45 – Rob Dunn on what the laws of biology predict about our future

*“These laws [of biology] are often very much at odds with our daily behavior,”* says Dr. Rob Dunn. “In the context of a world that we’re rapidly changing, they seem actually to be growing in their importance, rather than contracting. And they’re not really a part of our discourse. We tend to get caught up with Elon Musk flinging himself out into space, and not pay attention to the fact that whatever we do in space, the species that we bring with us into space are still going to obey the rules of life that we’ve come to understand here on Earth.”
Photo by Amanda Ward.

Humans try hard to control the natural world. We’ve dammed and straightened meandering rivers and filled in wetlands. We’ve transformed primordial forests into farms and turned oceans into highways. Humans and our domestic animals now account for an estimated 96 percent of all terrestrial mammal biomass. Wild mammals account for just four percent. Amid the cataclysms of the Anthropocene, we tend to think of ourselves as the primary shapers of our planet. But for all our efforts to tame, simplify, and cordon off nature, we remain just as beholden to the world’s ecological laws as we were more than 200,000 years ago when Homo Sapiens first emerged.

Like the laws of physics, paying attention to our planet’s biological laws empowers us to understand how the world works and to make predictions about the outcomes of our actions. In his latest book, A Natural History of the Future, Rob Dunn – an extraordinarily creative author and ecologist – warns that continuing to ignore these laws will cause us to fail again and again in our attempts to build a sustainable future for our species.

Dunn makes the case that the human species will survive not by simplifying and isolating, but through embracing biodiversity and living in accordance with the knowledge that we are at the mercy of the law of natural selection, the species-area law, and the diversity-stability law, to name a few examples. These laws aren’t merely fascinating phenomena. Understanding these inescapable rules of ecology is key to our survival and quality of life. Whether or not we heed them will have profound consequences for our future.

Ep. 30 – Sonia Shah on how animal microbes become human pandemics

*“The epidemiologist Larry Brilliant once said, ‘Outbreaks are inevitable, but pandemics are optional,'”* science journalist Sonia Shah recently wrote in *The Nation*. “But pandemics only remain optional if we have the will to disrupt our politics as readily as we disrupt nature and wildlife. In the end, there is no real mystery about the animal source of pandemics. It’s not some spiky scaled pangolin or furry flying bat. It’s populations of warm-blooded primates: The true animal source is us.” Photo by Glenford Nuñez.

In recent weeks, as Covid-19 has killed thousands, brought public life to a standstill and crippled global markets, the pandemic has been called a “black swan,” a term investors use to describe severe events that are unpredictable and extremely rare. But this coronavirus was no black swan to the scientists and journalists — including our guest, investigative journalist Sonia Shah — who were paying attention to the environmental, social, and political conditions that fuel the eruption and spread of infectious diseases. Shah and scientists she writes about have been warning the public for years of the mounting risk of a pandemic like Covid-19 and the ways in which our treatment of animals and our planet can cause unseen, but deadly, consequences.

It’s now widely known that Covid-19 originated in wild animals before jumping the species barrier to humankind. It’s not alone. Roughly two-thirds of all emerging infectious diseases begin in the bodies of animals, mostly wildlife. Microbes have spilled over from animals to humans for time immemorial. But, as humans dominate the biosphere, the pace at which pathogens are making that jump is getting faster and faster. SARS, Zika, H1N1, Ebola, HIV– and now COVID-19 –can all be traced to how we are interacting with animals and their habitats.

*“From cows, we got measles and tuberculosis; from pigs, pertussis; from ducks, influenza,”* Shah writes in *Pandemic*. *“But while animal microbes have been spilling over into humans (and vice versa) for millennia, it’s historically been a rather slow process. Not anymore.”* You can buy Pandemic here.

Sonia Shah has spent years diving into the origins of pandemics and the complex interplay between humans, animals, and pathogens. The disease backstories that Shah has investigated are powerful illustrations of the devastating costs of treating human health as independent of animal and planetary health. Shah is the author of five critically acclaimed and prize-winning books on science, medicine, human rights, and international politics. Her work has been aptly called “bracingly intelligent” by Nature and “dazzlingly original” by Naomi Klein.

Ep. 27 – Ed Yong on telling the grand, urgent and surprising stories of animal worlds

*“People often are best at learning when they encounter something that defies their expectations, where the gap between reality and expectation is the widest,”* says Yong. “I think one wonderful thing about covering the animal kingdom is that there are so many such gaps. Animals constantly surprise us in what they do and what they are capable of; even the people who know them best and who study them, people who devoted their lives to the understanding of the animal kingdom, are constantly surprised.” Photo courtesy of Ed Yong.

“Every human being is a colony,” Pablo Picasso once said. The insight is made literal in Ed Yong’s acclaimed book, I Contain Multitudes, about our hidden relationship with the microbial world. “If we zoomed in on our skin,” he writes, “we would see them: spherical beads, sausage-like rods, and comma-shaped beans, each just a few millionths of a meter across. They are so small that, despite their numbers, they collectively weigh just a few pounds in total. A dozen or more would line up cosily in the width of a human hair. A million could dance on the head of a pin.”

These microbes are not just hitching a ride, but enabling us to become ourselves: they help digest our food, sculpt our organs, and craft and calibrate our immune systems. To be at all, Yong demonstrates, is to be in partnership with them. Yong’s work has contributed to a radical shift in how we understand animals — from discrete organisms motivated by competition to living islands, communities of hidden beings.