I’m totally convinced that everything tastes better outside, and that the things you learn outside stick.
Prof. Eric Olson
Rumor had it that the Field Biology elective was the best class to take as an undergraduate at Brandeis because you got to hike, fish in the Charles, and, most importantly, avoid fluorescently lit lecture halls for six hours a week.
Rumor had it, there were no mind-numbing exams, no long taxonomies to memorize, no unfair grades.
As a stressed biology major, I and a whole waitlist of other students were 100% in.
On the first day of class, Prof. Olson trots into the classroom sporting khakis and muddy hiking boots, balancing various nets, sticks, and packets of paper on his person. He hands us an article about Bagheera kiplingi, the first vegetarian spider which he happened to discover in Costa Rica, and informs us that we will each be responsible for nursing a promethea silkmoth for the bulk of the semester in our dorm rooms. A burning question nudges at me that first day – why in the world would someone study bugs?
Meeting someone who really loves bugs is a good thing for the world.
Prof. Eric Olson
For one, grasshoppers existed long before dinosaurs (1).
For two, moths hear sound through their wings and navigate with the light of the moon and stars or geomagnetic cues (2).
For three, insects are the dominant lifeforms on Earth. One fun estimation shows that for every one pound of humans, there are 300 pounds of insects (3).
If that fact doesn’t quite land with us, another way to think of the sheer abundance is that there are an estimated 10 quintillion individual insects on Earth, and even this estimation is probably inaccurate because we’ve only discovered one fourth of their diverse forms (4).
Basically, insects are indispensable.
Not only are they the critical backbone of most food chains on the planet, but they are also incredibly inspiring to observe. In learning even a little bit about their diverse means of survival, defense mechanisms, and artful bodies, it’s impossible not to develop reverence for these underrated heroes.
As the abundance of insects diminishes, in some places up to 75% in the last thirty years, it becomes increasingly urgent for us to explore and, dare I say, fall in love with, the critters who stitch our world together.
As an entomologist by training and generalist by practice, Prof Olson devotes his life to studying bugs. He is especially fond of the giant silk moths (of which there are over 2000 species!) and explores how ecosystems weave together, and how to best bring the bounty of knowledge to unsuspecting students of all ages.
In writing this post, I had the privilege to sit down with Prof. Olson, share tangerines, pick his brain about ecology, and get a “sense of how people get obsessed” with bugs.
Uncertain of where our conversation would meander, I was pleasantly surprised when the common thread emerged: relationships shape everything.
Prof Olson’s study of evolutionary relationships between insects and other beings (plants, animals, soils) is inextricably linked to our own relationships, our understanding of transformation, and the sheer awe that comes from recognizing beauty when we see it.
When my son was 12, he asked me: Dad, why are there so many naked people in the pictures at the art museum?
I said: Because the human body is so beautiful.
…Silence.
Prof. Eric Olson
As a young lad, Olson went hunting for bugs with his father, who was a busy doctor with a fierce passion for the outdoors. In their few but memorable bonding moments, they were often crouching in a patch of Michigan woods, identifying bugs and capturing them for collection.
His curiosity quickly sprouted when he found a book called “The Moth Book: A Guide to Moths of North America” by W.J. Holland in a bookstore on his way home from middle school.
“I was so excited. I biked home and got money from my mom to bike back to buy this book. And this is the actual copy [photo below]! You have to look back and say, ‘what a nerd, what a cute little nerd!’ I guess it was my calling”.
Published in 1903, The Moth Book flaunts that classic Victorian naturalist quality with poems sprinkled throughout, and snippets from Shakespeare and the bible. Unlike most textbooks I had to read for my biology classes, this one integrates taxonomy with the intangible, poetic experience of awe of evolutionary diversity.
Olson was so captivated by his first foray into moth mystery, that after studying geology and forestry, becoming a naturalist in Minnesota, and teaching in private schools, he pursued his doctorate work focusing on a moth named for a famous patron of British Victorian era butterfly collectors, Lord Rothschild. The detailed ecology of the picture wing moth, Rothschildia lebeau, formed his PhD. Then for his post-doc Olson spent six summers “stud[ying] insect poop”, conducting abundance surveys in Costa Rica with Earthwatch volunteer groups to help him. He would collect insect droppings, weigh them, and do the math. When I asked what the energy was like during those collections, he exclaimed:
It wasn’t quiet, it wasn’t like being a hermit. I was never really alone. I was surrounded by people, and it was fun!
In studying the three-dimensional world of the jungle through insect poop, he was contributing to the very few exhaustive baseline surveys of insect populations. These are important to see what kinds of changes are happening in the insect world in terms of sheer abundance.
In studying the picture wing moth specifically, he learned that out of the hundreds of eggs the female lays, only about two moths survive to adulthood. Predators swoop up the tasty caterpillars, wasps infiltrate their cocoons, and “it’s a total slaughter”. Olson admits, “it’s a terrible gamble and I would not want to be a bug”.
The flipside of the “slaughter” is that it allows for so many other animals, like birds, to have enough nutrients to flourish. Entire systems depend on caterpillars, for example, as a main source of food for their young. “The reason we have the diversity that we have, of songbirds like warblers and chickadees, is because of caterpillars mostly,” Olson reflects, “and most creatures up the food chain just wouldn’t exist without bugs in the picture”.
Darwin landed on Madagascar on his trip on the Beagle, and somebody brought him an orchid that had a big white face and this narrow tube to get to the nectar that was something like 18 inches long. He said “somewhere on this island, there shall be a pollinating moth found that has a matching tongue”. And sure enough, that moth was eventually found.
Prof. Eric Olson
Not only do insects fuel the food chain, but they also play a role in the arms race of plant diversity. Much of this diversity bleeds into our own prospects of medicine. Plants need creative defense mechanisms to protect against insects who would use them as food and breeding grounds.
This counter-evolution results in plants having a “unique cornucopia of chemical profiles”. With 40% of our prescription drugs (including aspirin!) coming from plant extracts or compounds (5), not to mention the myriads of herbal traditional medicines used in most cultures, our human bodies and economies profit significantly from the diversity instigated by insects!
The reality is, I still can’t tell a moth from a butterfly most of the time. Last August, I found a strange insect face with a bent wing in the grass near my bus stop and was shocked when the iNaturalist app identified it as a cicada. I guess I had only ever heard them, but never even seen one!
The Grand Canyon is like a monument. It’s this enormous gash of rock and vistas, a sense of volume of air. If you walk to the edge of the Grand Canyon and you look out, you just go: I get it now. But instead of a cathedral or monument, what we’re making when we go to the woods in a place like suburban Boston, or to the Charles River — it’s more like weaving a tapestry, or a quilt, or a painting. Each point in the whole is just this little thing, but over the course of the course, you hope that something of the richness clicks and the connections of the pieces come into view.
Prof. Eric Olson
How do we really learn to distinguish the fact that we live in a world full of diversity?
Prof Olson’s mission is to facilitate experiences that lay the groundwork for curiosity.
He notes that plants are a great place to start, since they “just stand there” and can’t run off to a nest, or burrow under the ground, or attack us.
“You can learn about the colors, patterns, textures, smells, the life cycles, seeds, fruits, dispersal, and plant chemistry” by looking at trees rather than trying to track down insects and birds with big groups of students.
“The concern about our modern training of young people is that for a lot of people, driving through the world or walking through the world, it’s just ‘green’. There’s no distinctiveness to it! It’s just green! That phenomenon is called plant blindness.” (6)
With botany in the modern day being viewed as “archaic”, most biology programs at universities don’t even offer courses in plant science. What’s more, the exposure to plants that does exist feels stiff and technical, with little room for poetry and spirituality as resources like The Moth Book flaunted.
As a passionate educator and lover of the natural world, Prof Olson breathes life and wonder into the classroom. He designs his Field Biology class at Brandeis to be experiential, focused on the stories and surprises abundant in nature. When asked about what he hopes students take away from his class, he responds with a little memory:
“I remember one time I was walking around campus with this entourage of twenty students behind me, we were carrying nets and stuff, and this visitor to campus was coming up our way and he said “is this a field bio class?” He’s like, in his 50s. And I go, “yeah, why?” and he goes, “that was my favorite class in college!” and then he just walked on. And that’s what I want. I want these kids to look back on this and say ‘boy, that was fun’.”
It was definitely fun for me back in 2014. The experience shaped much of how I examine relationships today. Learning even a little bit about insects, their complexity, and their mysterious abundance, challenges us to distinguish subtle systems of connectedness between all things.
With the insect world diminishing at alarming rates, we can’t help but mourn the loss of both biodiversity and abundance on this planet.
This loss is ours too – it is held by the weight of networks that drive infinite reactions, evolutions, and feedback loops. When our world falls out of balance and into monoculture, so do we, not just in terms of bugs and forests, but also spiritually. The more loss of life, the more “extinction of human experience” (7).
What we understand about the natural world comes from years of research and collaboration between observers, teachers, philosophers, mystics, and scientists.
The more we experience this vastness, the more we can recognize our humble, but integrated place in it all. The more we love and protect the vastness, the more medicine we have to heal ourselves of loneliness.
Prof. Olson is retiring this year and launching a reforestation project in Nicaragua.
To learn more about the reforestation project check out this video. Follow, donate, and learn about it if this interests you!
Thank you so much to Prof. Olson for making the time to hang out, share moth books, and chat at length about so many intimate aspects of his life. I’d also like to extend a huge thank you to my dad for encouraging me to attend Brandeis, a decision I grow more and more grateful for each year. Thank you so much to my friends who have dealt with me throwing moth facts at them. I would love to see any cool photos and identification of bugs around you, any moments that you had with insects that stick in your mind! Love you all ❤