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duminică, septembrie 15

Do Plants Have Something to Say?


Monica Gagliano says that she has received Yoda-like advice from trees and shrubbery. She recalls being rocked like a baby by the spirit of a fern. She has ridden on the back of an invisible bear conjured by an osha root. She once accidentally bent space and time while playing the ocarina, an ancient wind instrument, in a redwood forest. "Oryngham," she says, means "thank you" in plant language. These interactions have taken place in dreams, visions, songs and telekinetic interactions, sometimes with the help of shamans or ayahuasca.

This has all gone on around the same time as Dr. Gagliano's scientific research, which has broken boundaries in the field of plant behavior and signaling. Currently at the University of Sydney in Australia, she has published a number of studies that support the view that plants are, to some extent, intelligent. Her experiments suggest that they can learn behaviors and remember them. Her work also suggests that plants can "hear" running water and even produce clicking noises, perhaps to communicate.

Plants have directly shaped her experiments and career path. In 2012, she says, an oak tree assured her that a risky grant application — proposing research on sound communication in plants — would be successful. "You are here to tell our stories," the tree told her.

"These experiences are not like, 'Oh you're a weirdo, this is happening just to you,'" Dr. Gagliano said. Learning from plants, she said, is a long-documented ceremonial practice (if not one typically endorsed by scientists).

"This is part of the repertoire of human experiences," she said. "We've been doing this forever and ever, and are still doing this."

Dr. Gagliano knows that these claims, based on subjective experiences and not scientific evidence, can easily be read as delusional. She also knows that this could damage her scientific career — plant scientists in particular really hate this sort of thing. Back in 1973, an explosively popular book, "The Secret Life of Plants," made pseudoscientific claims about plants, including that they enjoy classical music and can read human minds. The book was firmly discredited, but the maelstrom made many institutions and researchers reasonably wary of bold statements about botanical aptitude.

Regardless, last year Dr. Gagliano published a heady and meandering memoir about the conversations with plants that inspired her peer-reviewed work, titled "Thus Spoke the Plant." She believes, like many scientists and environmentalists do, that in order to save the planet we have to understand ourselves as part of the natural world.

It's just that she also believes the plants themselves can speak to this point.

"I want people to realize that the world is full of magic, but not as something only some people can do, or something that is outside of this world," she said. "No, it's all here."

As environmental collapse looms, we've never known so much about life on earth — how extraordinary and intricate it all is, and how loose the boundary where "it" ends and "we" begin.

Language, for example, doesn't seem to be limited to humans. Prairie dogs use adjectives (lots of them) and Alston's singing mice, a species found in Central America, chirp "politely." Ravens have demonstrated advanced planning, another blow to human exceptionalism, by bartering for food and selecting the best tools for future use.

The list goes on. Leaf-cutter ants not only invented farming a couple million years before we did, but they have their own landfills — and garbagemen. Even slime molds can be said to make "decisions," and are so good at determining the most efficient route between resources that researchers have suggested we use them to help design highways.

But it may be plants whose capacities are the most head-rattling, if only because we tend to view them as décor. Plants can do a lot of things we can't. Trees can clone themselves into 80,000-year-old superorganisms. Corn can summon wasps to attack caterpillars. But research suggests we also have some things in common. Plants share nutrients and recognize kin. They communicate with each other. They can count. They can feel you touching them.

So we know that plants respond to their environments in sophisticated, complex ways — "far more complex than most of us realized a few years ago," said Ted Farmer, a botanist at University of Lausanne in Switzerland and one of the first to defend the concept of inter-plant communication.

Dr. Farmer is among those still "very" uncomfortable describing plants, which lack neurons, as "intelligent." But now it's "consciousness" — another word without a firm definition — that's really raising hackles in the scientific community.

A group of biologists published a paper this summer with the matter-of-fact title "Plants Neither Possess nor Require Consciousness." The authors warned against anthropomorphism, and argued that proponents of plant consciousness have "consistently glossed over" the unique capacities of the brain. Though her book went unremarked upon, Dr. Gagliano's experiments and statements ascribing feelings and subjectivity to plants were among those critiqued, and she was categorized witheringly within "a new wave of Romantic biology."

Versions of this debate have been simmering for years. In 2013, Michael Pollan wrote about Dr. Gagliano presenting the results of an experiment to an incredulous audience.

That study is likely her most widely known. In it, she sought to discover whether plants, like animals, could demonstrate a basic type of learning called "habituation."

The Mimosa pudica — you may know it as the "sensitive plant" — contracts its leaves when touched. So, in the experiment, potted mimosas were dropped a few harmless inches onto foam. At first, the leaves closed up immediately. But over time, they stopped reacting.

It wasn't that they were fatigued, Dr. Gagliano wrote, because, when the pots were shaken, the leaves closed up again. And when the dropping test was repeated a month later, their leaves remained unruffled.

The plants had "learned" that the drop wasn't a threat, Dr. Gagliano argued. The plants remembered.

And subsequent research has suggested that plants may indeed be capable of some type of memory. But Dr. Gagliano's conclusion didn't go over well at the time. Her framing of the data didn't help. She insists that she doesn't use metaphors in her work, and that "learning" is the best description we have for what took place, even if we don't know how the plants are doing it.

This experiment was "a remarkable piece of work," Mr. Pollan said in an interview. "Humans do tend to underestimate plants, and she's one of a small group of scientists who are trying to change that story."

"Monica is a brilliant young woman, and she's been a major idea generator in the field of plant sensory biology," said Heidi Appel, a scientist who found that rock cress produce more defensive chemicals when exposed to the stressful sound of a caterpillar chewing. "We're investigating things I don't think we would have otherwise."

But, in Dr. Gagliano's memoir, Dr. Appel said, "there's a commingling of science and spiritual experiences that I feel are best disentangled."

"I think it's important to separate out what you can prove and what might be true in a more subjective way," Mr. Pollan said. "And I don't know where you draw the line, exactly."

I met Dr. Gagliano at an outdoor cafe in San Francisco, next to a pot filled with bright, chubby succulents. I found myself watching it, wondering if its inhabitants were aware that we were debating their awareness.

Dr. Gagliano grew up in northern Italy and is a marine ecologist by training. She spent her early career studying Ambon damselfish at the Great Barrier Reef.

After months underwater observing the little fish, Dr. Gagliano said she started to suspect that they understood a lot more than she'd thought — including that she was going to dissect them. A professional crisis ensued.

Plants were inching their way into her life. As Dr. Gagliano tells it, she'd been volunteering at an herbalist's clinic, and had begun using ayahuasca, a hallucinogenic brew that induces visions and emotional insights (and often nausea). She says that one day, sober, she was walking around her garden and heard, in her head, a plant suggest that she start studying plants.

In 2010, she traveled to Peru for the first time to work with a plant shaman called Don M.

Image

CreditGeorge Etheredge for The New York Times

To communicate with plants, Dr. Gagliano followed the dieta, or the shamanic method in the indigenous Amazonian tradition by which a human establishes a dialogue with a plant. The rules can vary, but it usually involves following a diet (no salt, alcohol, sugar or sex; some animal products may also be prohibited, depending on the culture) and drinking a plant concoction (sometimes hallucinogenic, sometimes not) in isolation for days, weeks or months. An icaro, or medicine song, is said to be shared by the plant, as well as visions and dreams, and the plant's healing knowledge becomes a part of the human. It's not fun, she warned.

Dr. Gagliano worked with multiple plant shamans, or vegetalistas, in Peru. There she bathed in the foul-smelling pulp of an Ayahuma tree, which then designed a scientific experiment for her, instructing her to "train young plants in a maze and give them freedom of choice." The Ayahuma also helped her diagram a 2017 study investigating pea plants' use of sound to detect water.

In the memoir, she wrote that she also traveled to California to work with a health care professional who conducts vision quest ceremonies (that's when the oak tree spoke to her). She visited "the Diviner," a man trained by the Dagara people of Ghana and Burkina Faso to channel nature spirits.

At a certain point, Dr. Gagliano began going solo, "working with" plants like basil in her own veggie patch.

"Did you ever wonder if you were going insane?" I asked.

"Absolutely," she said, and laughed. "I still do." But she believes she should be free to talk openly about these experiences.

"Maybe we should admit that we hardly understand who we are, we hardly understand where we are at, we know very little compared to what there is to know," she said. "To be open to explore and learn, I think that is the sign of wisdom, not of madness. And maybe wisdom and madness do look very similar, at some point."

As a white woman on a journey through sampled bits of sacred rituals, Dr. Gagliano speaks thoughtfully and often about the legacies of colonialism, capitalism and exploitative New Age trends, which certainly includes the rise in ayahuasca retreats. A term like "shaman" can now bring to mind its plunder by an unpopular modern archetype — the personal-growth-obsessed wellness devotee, dreamily trailing sage in circles around her unvaccinated children.

But Dr. Gagliano's journey, her supporters say, is rooted in a desire to challenge dominant assumptions.

"I have been working with the idea of plant intelligence for many years," said Luis Eduardo Luna, an anthropologist and ayahuasca researcher in Brazil who has collaborated with Dr. Gagliano. Back in 1984, he published a paper in the Journal of Ethnopharmacology detailing the concept of plants as teachers in the Peruvian Amazon.

Dr. Luna said he was excited to hear these ideas expressed by a scientist, rather than someone in the humanities.

"Perhaps we are living in a much more interesting universe, perhaps we are living in a planet full of intelligent life," Dr. Luna said. "I think it's very important that we recover, somehow, this idea of the sacrality of nature, in the terrible situation in which we are today."

"I'm really interested in the notion of plants as teachers, what we can learn from them as models," said Robin Wall Kimmerer, an author, botanist and SUNY professor, and a member of the Citizen Potawatomi Nation. "And that comes from my work with indigenous knowledge, because that is a fundamental assumption of indigenous environmental philosophy."

Dr. Kimmerer doesn't see Dr. Gagliano's experiences as mystical processes so much as poorly understood ones.

"Some of the medicines that people have made are sophisticated biochemistry over a fire," Dr. Kimmerer said. "You think, how in the world did people learn this? And the answer is almost always, 'The plants told us how to do this.' This is not a matter necessarily of walking in the woods and being tapped on the shoulder, but indigenous cultures have sophisticated protocols that are research protocols, in a sense, for learning from the plants. They involve fasting, ceremonial practices that bring one to a state of such openness to the conversations of other beings that you can hear them."

"Have you ever had an experience like that?" I asked.

"I have," she said, preferring to leave it mostly at that. "Suffice it to say, I have had experiences of intense focus and attention with plants where I came away knowing something that I didn't know before, and it's quite incredible. You feel like, 'Wow, where did that come from?'"

The problem with talking about these experiences, Dr. Kimmerer said, is that they "are grounded in a cultural context that is so different from Western science that they are easily dismissed."

Reality has become rather strange lately. Tech billionaires are trying to colonize the moon. U.F.O.s appear to exist, in some capacity. Parents in conspiracy-minded Facebook groups are poisoning their autistic children with bleach. Reality TV has fused with politics. The future of the planet looks remarkably grim. (Or maybe we're in a simulation.)

Dr. Gagliano's more subjective claims may feed, in an unnatural time, a spiking hunger for naturally sourced answers. People are looking for "wisdom from nature," Mr. Pollan said, when describing the rising interest in psychedelic compounds like ayahuasca and psilocybin mushrooms. The booming wellness industry is certainly packed with all things "natural" and "plant-based." The novel that won the most recent Pulitzer Prize was inspired by a giant redwood that produced a "religious conversion"; caring for houseplants seems to be a national obsession.

Given this context, it's logical that critique over her approach hasn't stopped Dr. Gagliano from finding an audience. She spoke about plant intelligence at last year's Bioneers Conference, and was invited to speak at last year's Science and Nonduality conference, along with Deepak Chopra and Paul Stamets, a respected mycologist who believes that mushrooms are trying to communicate with humans through their hallucinogenic properties.

This summer, Dr. Gagliano sat on a sold-out panel called "Intelligence Without Brains" at the World Science Festival. There I eavesdropped on a woman excitedly explaining Mr. Pollan's recent book on psychedelic therapy to her mom. Why had they come?

"We're plant ladies!" said one, beaming. "There's a lot about plants that we don't know that might end up saving us, in some regard."

Dr. Gagliano spoke about plants with pointed familiarity. In her telling, they became jaunty little characters; she used pronouns like "he" and "they" — never "it."

At the festival, a young woman asked Dr. Gagliano how her scientific work had changed her understanding of the world.

"The main difference is that I used to live in a world of objects, and now I live in a world of subjects," she said. There were murmurs of approval. "And so, I am never alone."

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Wallace M
Palo Alto, CA

I am very impressed by two things. One is that I know how risky it is for a scientist to approach this frontier, must less speak out boldly about it. Careers get killed this way. You have my admiration for being out on the pointy end of the spear of science. The second is how you respect and honor the traditional, introspective methodologies. So often scientists will (re)discover known wisdom and act as they were the first, like Columbus "discovering" America. In my experience, the partnering of the two approaches, as you have done, provides something more profound than either in isolation.


coco
Goleta,CA 

I learned in high school from reading Krishnamurti that all living things require our sensitivity and conscious care. No more walking along unconciously breaking branches and smashing seedlings, it made me a much better person. I love plants, I work with seeds professionally and people tell me I have a green thumb. I always want to say, no, you just have to listen to the plants, they tell you what they need. To be awed by nature is more than a gift, it is a necessity. Botany is the seat of everything we know about biology, it isn't just a science, it's a spiritual tool for human growth.


NGB
North Jersey 

Just a few somewhat disparate observations: My house in Hoboken faces south, which is lovely in that I get so much sunlight inside, but the direct light is tough on my plants outside. Last year I planted a hydrangea in a big planter out there. It struggled to bloom in the summer heat. One day I noticed the beginnings of a flower among the leaves, and was astonished (and moved) when I noticed that an adjacent leaf would bend itself over the bud only during the full heat of day, clearly to provide some shade and protection for it. Explain it as you will; I was awed. I took a number of hallucinogens when I was young. The only experience I ever had that actually seemed to have meaning, and that I still wonder about over 30 years later, was watching someone's dorm-room plant apparently growing and then un-growing, or receding, over and over. It was beautiful, and I still believe that it MEANT something, although I may never know what. I have a lot of trouble pulling weeds and pruning around the Japanese Lilac outside my house--especially the vines of the Morning Glories, which seem to know so uncannily how to seek things to wind themselves around. Yes--I silently apologize and explain when I cut or pull. No, I'm not crazy. I doubt that plants have "words" for things; their intelligence is too sophisticated to rely on those things which are so often used to obfuscate, hurt, lie, and try to explain that which can't be explained. And I'm a poet/writer, so I can say that. :)


Dawn
Portland, Ore. 

Why are we so afraid to open ourselves to possibilities? Why is our Western culture so quick to mock those who don't share those fears? I so appreciate all that science has done to explain phenomena around us - our universe, our frailty, the things that will kill us if we don't pay attention. But why limit ourselves? How can it possibly hurt to listen? That's essentially what this intriguing article is about: Having the humility to open ourselves to "more things in heaven and earth ... than are dreamt of in your philosophy," as Hamlet observed centuries ago, including basics like a flat earth that the sun revolved around. Once, that was as rock-solid as science can get. So were countless beliefs that went from astronomy to medicine to .... climate. And "whether or not we are to blame." So much for that. Even Shakespeare knew that pride is the quintessential human flaw. If plant life can teach us anything, let's start with that.


pjc
Cleveland

Just remember, if you can't hear the plants it's because they all decided to ignore you.


HappyByChoice
NC

I've definitely had spontaneous satori experiences in which I could sense the life of trees quite clearly. The experiences sometimes lasted days, once even weeks. There is no doubt that there is a way of subjectively experiencing existence and interacting with each other among trees. Whether you call it "thinking" or "feeling" I think is just semantics. We humans can't help but to anthropomorphize other beings, since we necessarily understand others only from our own perspective. No harm there. It's just a way of trying to grapple with ideas that aren't fully formed and communicate with others around them. Imprecision in that endeavor should not imply that that which is trying to be understood must not be real simply because it isn't already understood.