The Science of Sustainability: Geopolitics and Dust Storms in China

By: Ethan Sontarp ’24

Trained as a sociocultural anthropologist, Jerry Zee, Assistant Professor of Anthropology and the High Meadows Environmental Institute, just about does it all. His research looks through the lenses of geophysics, literature, feminist studies, ethnography, aerosol science, and more, to fill gaps in our current knowledge of Chinese geopolitics in relation to changing weather patterns. Read this interview to dive into his complex and interdisciplinary world!

Image Credit: Jerry Zee via https://environment.princeton.edu/people/jerry-zee

What does sustainability mean to you? How do you engage with sustainability outside of your work?

Sustainability is an idea that […] there is an ethical, technical, political demand for us to think about what would be necessary that the planet outlasts us. It’s a concept that has roots in the fantasy of the sustainability of the planet for capitalism, but I think that we can tinker it, or tweak it, or undo it, so that it can orient us more broadly toward a relationship with things we can’t possibly imagine yet. I would like to think about it as an open ethical and political injunction, you know, our responsibility to both the past and the future. As an anthropologist, one cannot draw a clear distinction between work and not work.

Could you give a brief overview of your current research? What makes it interesting to you?

I write about what I call modern weather, or a meteorological contemporary in China. What I mean by this is that accounts of modern China are given in political and geopolitical terms, and parallel to this, I try to make sense of how the period that we understand as China’s modernity (its different adventures with socialism, late socialism, experiments with markets, and different kinds of political reform) has also been a time in which the weather across China has been changing in ways that are deeply linked to political transition. The things I think most specifically about are dust and aerosol events, so I’m interested in how in the last several decades, a crisis of large-scale land degradation across China’s interior, most conventionally known as desertification, has deep-rooted relations with the changing nature of Chinese institutions, politics, and society. There’s a tremendous number of strange things happening which confounds conventional ways of understanding what we think the Chinese state is and does, and what we think about the horizons of liberal environmental politics.


A sweeper walks with a broom along a road during morning rush hour as Beijing, China is hit by a sandstorm.

Image and Caption Credit: https://www.reuters.com/article/us-china-weather-sandstorm/beijing-choked-in-duststorm-stirred-by-heavy-northwest-winds-idUSKBN2B703

How do you approach your research problems? What resources do you use to navigate a research journey?

I’m trained as an anthropologist, but I think across a couple of different fields that inform the way I do research. I really like engaging with the humanities, especially in literature, and then I think across feminist traditions and science studies. Ethnographic research in the way I understand is based both on long term fieldwork and what we call participant observation, which means going and living in the rhythms of a certain kind of community or place for a long time – thinking from within the logics and tensions and textures of lives in these places. To think concretely my research involves working with state bureaucrats, scientists, and everyday people in China. That means everything from working with ecologists and geophysicists at state environmental research stations to forestry officials and planting teams from China and Korea to aerosol scientists in the US, to living with herders and pastoralists as they figure out how to manage the degradation of their pastures.

How do you avoid observer bias?

You can’t. We are all people who have backgrounds and who come from places and who are trained in certain ways. One of the questions that, as an ethnographer, I think about all the time is, “How is it that the specificity of who I am shapes the kinds of claims and arguments I make?” One of the things you learn to do is undercut your own arguments and think about the ways that you may be deeply committed to them. I fully believe that if another person did exactly the same project it would be a different question, but at the same time, I’m committed to an empirical truth as it appears through the encounters I’ve had.

What are some issues with our current understanding of Chinese geopolitics?

I think we need better accounts of China as an environmental agent and state. Many of the accounts that we get in the US either oppose China as an environmental hellscape in which the environment is collapsing in freefall, when in fact there are many kinds of political experiments that are emerging in tandem with the ecological catastrophe that is modern China. On the other side, there are sort of very hopeful and messianic accounts of Chinese environmental politics that pose it as a viable alternative to what people see as impasses in either the American or the international systems. Often people will point to China’s energy sector and its investment in clean energy transition as proof that the Chinese system is somehow better, and I wanted a way of doing research that doesn’t fall either into one of these pools, so that’s what moves me.

Are there any sustainability or climate science resources you know of that you would suggest for readers?

I would check out an organization called APEN, which is the Asian Pacific Environmental Network. They are at the very cutting edge of doing environmental justice work and research in communities that are affected, and they are good at thinking about the inter-relationship of environmental and social processes.

Check out my syllabi – I’m learning new things all the time. One of the more compelling things over the last couple of years since I’ve started teaching is that I learn a lot from the passion and energy and creativity and resolve of students. Learn from yourself.

The Science of Sustainability: Ian Bourg

By: Ethan Sontarp ’24

Environmentalist Rachel Carson’s famous book Silent Spring (1962) first brought public attention to organic contaminants such as DDT, a common insecticide that caused detrimental impacts to numerous ecosystems until its EPA cancellation order in 1972. Organic contaminants are a wide class of carbon-containing chemicals, encompassing familiar names such as glyphosate (RoundUp) and BPAs. They are created and discarded by human industry and are often transported into ecosystems through runoff water. To get a better understanding of modern research involving these contaminants, I interviewed Ian Bourg, Assistant Professor of Civil and Environmental Engineering and the High Meadows Environmental Institute. Professor Bourg leads the Interfacial Water Group at Princeton, which focuses on understanding the microscopic processes which occur when water is in contact with air, clay, and organic contaminants.


Image Credit: Ian Bourg via https://cee.princeton.edu/people/ian-bourg

Why do you study processes at the microscopic scale?

Mostly what we’re doing is trying to understand the fundamental properties of matter, focusing on systems that are relevant to the environment – either in the natural environment or in engineered systems that are being used for protecting the environment. When a typical engineering group is doing work, they’re trying to design ways to manipulate the world and on the human scale to reach certain desired outcomes. Because many engineers work on the macroscopic scale, they use equations that represent the world at the macroscopic scale. In a lot of cases, we think that we can improve these equations if we gain more fundamental insight into how matter behaves at smaller scales.

Could you give a brief overview of your current research? What makes it interesting to you?

I’m interested in water in general because water is cool and water is important. Most water on the surface of the earth, or model that people are familiar with, is […] bulk liquid water, so like water in the ocean or in a glass. The properties of bulk liquid water are pretty well understood by now. Water near a surface remains kind of not that well understood, right? [For example] if I look at water near the water-air interface or near a solid surface or something like that, it changes its properties in various interesting ways depending on what’s on the other side of the interface.

The reason why we study clay is coming from our interest in water at interfaces, in that […] if you look at the average chemistry of the Earth’s crust, it’s mostly oxygen, silicon, and aluminum. There’s one way of packing together oxygen, silicon, and aluminum inside a crystalline structure that is apparently extremely stable and pretty close to the composition of the crust. That clay structure is a kind of structural motif that makes up half of the sedimentary rock mass, half of the mineral mass in soils, and about a third of the rock mass of the surface. If we’re interested in the interfaces between water and a mineral, most of it near the surface of the Earth would be water in contact with those specific minerals. So just kind of like by sheer abundance, if we’re interested in mineral-water interfaces, [clay] is the most logical one to be looking at.


Simulated clay-water interface with organic contaminant PFBS and calcium chloride ions.

Image Credit: Jennifer Willemsen and Ian Bourg via Molecular dynamics simulation of the adsorption of per-and polyfluoroalkyl substances (PFASs) on smectite clay, Journal of Colloid and Interface Science, 2021

What are some common obstacles in removing or remediating contaminants in our natural systems?

My Ph.D. advisor always used to say that science doesn’t solve problems, it just replaces one problem with a different problem. It kind of seems a little bit bleak, […] but then, on the other hand, you’re just basically hoping that you’re replacing a big problem with a smaller problem, right? Organic contaminants that are present in natural systems tend to decay naturally with some kind of exponential decay, both through interaction with sunlight, like if they’re in a river or lake and also by being accidentally broken down by microorganisms. There’s some trickiness with that in that it often generates collections of byproducts or degradation products, that in some cases can actually be more toxic than the initial contaminant. A lot of engineered processes for removing contaminants from a system basically just remove them by transferring them to a different system. It doesn’t take [the contaminant] out of the system completely, so it’s always going to be there. Historically a lot of environmental engineering has kind of focused on protecting humans, basically preventing contaminants from coming into contact with humans, whereas a more sustainable approach would be actually removing contamination from the Earth.

What does sustainability mean to you?

I think sustainability to me means thinking about the entire lifecycle of some kind of environmental issue, I guess it’s easier for me to think of in terms of contaminants or carbon. I feel like sustainability kind of in a way also forces you to think more about natural processes. We try to focus on what we think are the most pressing kind of environmental concerns that humanity is facing, and often those happen to be concerns where [the] most pressing environmental issues are the ones where humans are clearly behaving in a very unsustainable way.

Are there any sustainability or climate science resources you know of that you would suggest for readers?

I did read Silent Spring six months ago and I was like this book is amazing! I don’t know why I didn’t read it before, you know. It’s also scary, but interesting.


Image Credit: National Museum of American History via https://americanhistory.si.edu/collections/search/object/nmah_1453548

One thing that I try to do in in CEE 207, the Intro to Environmental Engineering course, is to take a 10-minute break and talk about environmental news in like the major news outlets that that came out since the previous lecture. The Guardian has had a ton of really nice kind of environmental coverage for the last several years.

The Science of Sustainability: Paul Chirik

By: Ethan Sontarp ‘24

In its current state, only a fraction of the plastic types we use on a daily basis is actually recyclable, accounting for an 8.7% recycling rate. While the process may be limited, sustainability researchers have been working to make improvements in the materials we recycle in order to reduce our consumption of single-use plastics. In this interview, I discuss the chemistry of recycling with Paul Chirik, Edwards S. Sanford Professor of Chemistry, whose lab recently discovered a plastic material with the potential to be recycled more effectively.

Image Credit: Paul Chirik via https://chirik.princeton.edu/

Could you give a brief overview of your current research? What makes it interesting to you?

So, what I do is I study catalysis. That’s a key component of sustainability because what catalysis does is by definition it makes chemical processes use less energy. The question we asked is: Is catalysis as sustainable as it can be? That’s the cool part of sustainability research – you can always do better. You can always save a little bit more [energy] here and there. One of the big things we’ve been after for a long time is that we’ve looked at the way people use catalysts; usually, they’re based on rare elements like platinum and palladium (all the stuff in the catalytic converter in your car). Nobody would argue catalytic converters are bad, they’ve completely cleared up the air and the environment from car exhaust, but at the same time, we’re using elements that come out of mines that have really huge carbon footprints. So, the [goal] is to use these great catalysts with iron and try to make all these reactions go better with less energy input [and] generate less waste. I think the most exciting thing is that we started doing this trying to make catalysts to insert into existing processes, and then when you start playing with new metals and new catalysts, you discover things you never thought you would see.

Image Credit: BBC News via https://www.bbc.com/news/science-environment-45496884

What does the current recycling process for plastics look like? How would you like to further improve it? 

I think people are now appreciating how bad it is. You know, I actually feel a little guilty as a chemist, I didn’t realize how bad it was until we started studying it. I figured every week we put our milk jugs at the end of the curb and they went away and all is well, and you don’t realize the percentage of plastic that gets recycled is so low. That tells me there’s a chemistry problem here, the biggest part of it is we need new materials. We use a lot of plastic that it doesn’t make sense to recycle.

What does sustainability mean to you? How do you engage with sustainability outside of your scientific work?

Sustainability to me means a way of life, right? I think it should be how you interact with the environment around you. Outside of my job, I try to practice what I preach which is looking at how much stuff I throw away, how much I consume […]. You have to ask yourself what kind of carbon footprint you think you have and compare that to what you actually have. I think the most impactful thing I can do is educate people, because of the kind of science we do.

What is your favorite source of sustainable energy and why? 

If you ask me as a chemist where we need to be in 100 years, we need to rely on the sun. It’s free, there’s lots of it. The problem is we don’t know how to do most of [the chemistry] yet. We have a long way to go but that doesn’t mean you give up, because it’s a really hard problem.

What are some common misconceptions about energy sources?

I think the biggest misconception is that people think that fossil fuel is only for gasoline in their car. They don’t realize that you cannot live without interacting with multiple products [of fossil fuels], whether it’s your clothes or carpets, [even] the food you eat was grown from fertilizer that was made from fossil fuels. Just about every single product you interact with […] had an interaction or derivation from fossil fuels.

Are there any sustainability or climate science resources you know of that you would suggest for readers?

I pay a lot of attention to elemental usage. Hopefully, people worry about their carbon footprint, but that’s still very narrow, you should worry about your element footprint. Your cell phone has 65 of them in it, and some of those elements take a lot of energy [to obtain].

Discover where the elements which make up your smartphone are sourced from:

https://www.nms.ac.uk/explore-our-collections/resources/from-minerals-to-your-mobile/

Minerals in your mobile

Image Credit: National Museum of Scotland via https://www.nms.ac.uk/explore-our-collections/resources/from-minerals-to-your-mobile/

Keep Sustainability in Mind During Move-In

Author: Pooja Parmar ‘22

One of the most exciting and stressful days of college is quickly approaching— Move-In. After being off-campus for 1.5 semesters, many of us are looking forward to moving in and reviving our Princeton experience. Even though campus life will not be the same, I know we are looking forward to seeing new faces and taking random walks throughout campus once again. Going into Move-In day with the right mindset could help you start the semester off with the right foot. This is our first opportunity of the semester to help Princeton achieve its zero-waste goal

The emergency Move-Out in March 2020 exposed how wasteful dorm life can be. While the Office of Sustainability and Building Services staff tried to collect and organize as much of the leftover furniture and materials as possible, due to the rush of Move-Out, much of it was thrown away. To put this into perspective, during the 2019 Move-Out, over 50 tons (equivalent to the weight of about 7.5 elephants1) of dorm materials were left behind on campus by students.

Move-Out 2018

The Office of Sustainability’s Greening Move-Out program collected, sorted and cleaned about 13.10 tons of items for reuse through the Move-In Resale (pictured below) and donation to local organizations. The rest (about 70%) was sent to landfill due to the poor condition of the item or damage that could have been caused from any stage between drop-off to when it was picked up for donation as well as lack of storage space. Many items are also not able to be donated or recycled such as pillows and comforters. Therefore, without the organization and Greening Move-Out effort, you can imagine the amount of waste that was produced from the emergency Move-Out and the need to reduce the amount of items brought to campus in the first place.

Images from 2019 Move-In Resale 

We can do better by making sure to keep sustainability in mind during Move-In. Here are some tips when preparing for Spring 2021 Move-In: 

  1. Remember to only bring items that you will need. Be deliberate about whether or not you need the same number of items as you did last year when you expected to be on campus for a full year.
  2. Pack reusable items such as reusable mugs, water bottles, silverware, or food storage containers as well as supplies to clean them such as reusable cloths and dish soap. This will help reduce your reliance on single-use disposable items especially during quarantine.
  3. Think ahead about storage. If you don’t think you will be able to store the item for reuse or donation at the end of the semester, reconsider the purchase or just don’t bring that item to campus. Remember, you’re only packing for ONE semester!
  4. Make sure to coordinate with your roommates to prevent duplicates of an item. Coordinating who brings what will also lessen the storage burdens on any one roommate at the end of the semester, making it easier to reuse the item. 
  5. Shop local and buy secondhand. If you absolutely need a certain item for your room, shop local secondhand sources like the Free and For Sale Facebook group, TigerTrade, and Resource Recovery. There are also several secondhand stores in or near Princeton such as the Habitat for Humanity Restore, Skillman Furniture Store, Elephant in the Room Design, and One of a Kind Consignment. Please note: The Office of Sustainability is unable to offer a Move-In Resale this semester.

Sustainability is all about building small and manageable habits that you can incorporate into your lifestyle. Treat Move-In as an opportunity to build some new habits into your life and to explore minimalist living and secondhand shopping. 

More information about the Spring 2021 Move-In is available on the Undergraduate Housing website.

Sources: 

1https://www.bluebulbprojects.com/measureofthings/results.php?amt=25.23&comp=weight&unit=tns&searchTerm=


Fast Facts About Fast Fashion

Author: Eve Cooke ’22

Image Credit: Gatis Sluka, 2020.

What is fast fashion?

Fast fashion—like fast food—is cheap, easy to get your hands on, and not that good for you or the environment. Merriam-Webster defines fast fashion as “An approach to the design, creation, and marketing of clothing fashions that emphasizes making fashion trends quickly and cheaply available to consumers.” Fast fashion companies can sell their clothing at such a low price because the environment and the workers who make the clothes are absorbing the cost. To maximize profits, fast-fashion companies underpay and overwork their workers, cut corners on quality control and workplace safety, and produce environmental emissions that pollute our air, water, and land.

There are several organizations that are dedicated to reforming fast fashion companies and educating consumers, including the Ellen MacArthur Foundation and Fashion Revolution. As consumers and citizens of the world, we have the power to take action against fast fashion. 

Here’s a list of some of the other hidden costs behind fast fashion, along with ways that you can take action to mitigate the damage caused by this industry:

What can we do?: Join the Fashion Revolution and support their campaign to pressure fast fashion companies to put an end to forced labor from their supply chains, pay their workers a living wage, provide safe working conditions, and to be transparent about who makes the clothes they sell.

What can we do?: Remake, an organization dedicated to ending fast fashion, suggests that “[by] doubling the life of clothing from one to two years, we can help reduce emissions from clothing production and disposal by as much as 24%.” You can also try to only buy clothing that you need and that you will wear over and over again. If you have the resources, supporting ethical and sustainable brands and investing in durable pieces is a really great option, but making thoughtful and careful purchases is also an important way for anyone on any budget to shop more sustainably.

Follow Mend on Instagram for sustainable fashion and repair tips!

Remember to take care of the clothes you already have by repairing rips or missing buttons and altering or upcycling clothes you don’t wear anymore. If you want inspiration or information about repairing and upcycling clothes, check out Mend’s Instagram (@tigers_who_mend).

What can we do?: Try to buy second-hand clothing. If you are in Princeton, check out Greene Street or the Nearly New Shop. You can also buy and sell used clothing on various websites and apps such as eBay, Depop, Etsy, ThredUP, and Poshmark. Vintage clothing is also an affordable way to find high-quality and unique clothing on a budget. If you are cleaning out your wardrobe, try swapping clothes with your friends or selling your clothing online. That way your clothes will wind up with someone who will actually wear them!

Want to learn more about fast fashion? Join Princeton Mend and John-Hopkins University on November 13th to watch and discuss The True Cost!

Eve Cooke ‘22 is a Mend Leader and EcoRep for the Office of Sustainability

The Lazy Student’s Guide to Sustainability

Author: Grace Liu ’23

Do you want to help save our planet but also can’t be bothered to get out of bed? Well, this is the blog post for you! Here are some sustainability tips that require almost no effort at all.

Level 1 – Couch Potato 

Don’t want to move an inch? There are plenty of ways to be green on the internet.

Level 2 – Sweet Potato

These tips you can do from the comfort of your home. Some of them even require net negative effort!

  • Take shorter showers – Need I remind you that nobody can see your legs on zoom? “Shave” minutes off your shower time instead and save gallons of water! While you’re at it, might as well let your hair air dry instead of blow drying.
  • Eat more plant-based meals – Look, I’m not asking you to go fully vegan or anything, but do you realize how much time and effort it takes to cook a steak? You could whip up a quick veggie pasta or salad in a fraction of the time (and a fraction of the cost)!
  • Adjust your thermostat – as the temperature cools down, there’s no need to turn the heating up. Instead, cozy up with some blankets and tea/coffee/hot chocolate.

Level 3 – Hot Potato

Who’s a couch potato? Not you! Here are some quick tips for when you’re out and about.

  • Carry a reusable water bottle or utensils – Want to reduce your single-use plastic waste while safely dining out? Use a reusable water bottle or reusable utensils – all you need is a metal fork wrapped in a napkin for most meals!
  • Buy ugly produce – Reduce food waste by picking the funny looking fruits and veggies while shopping. They are just as nutritious, and it’s what’s on the inside that matters 😉
  • Bike/walk instead of driving – On the surface, this might sound like a lot of effort, but if you get your exercise in while commuting, there’s no need to go to the gym later…

Sustainability doesn’t have to be difficult. Whether you’re surfing the internet or marching in a climate strike, we can all do something positive for the planet!

“Heart potato” by cuorhome is licensed under CC BY-NC 2.0

Sustainability on a Budget!

Author: Adam Wickham ’22

While browsing social media, it may seem like you need to buy a lot of new, sustainable gadgets and gizmos in order to be environmentally friendly. However, you don’t need to go into debt in order to be sustainable! In fact, you can actually save money through some straight-forward changes in shopping, eating, cleaning, and organizational habits. As the motto goes: reduce, reuse, recycle! While we EcoReps often stress recycling, it is even better to reduce your consumption and reuse things that you’ve already consumed! Below are some tips on how you can be more sustainable on a budget:

  1. Buy seasonally (and locally)!

Eating locally doesn’t mean you have to break the bank at an upscale supermarket like Whole Foods; it just means that you are conscious of what you eat and when it’s in season. Fortunately, when something is in season, it’s generally cheaper! While farmers’ markets offer the greatest variety, local produce carts and supermarkets of immigrant communities offer good options too if they’re available in your area. 

Here are some examples from the USDA. Price and availability vary by your region. 

  1. Clean with reusable rags and easy DIY cleaning solutions

When your clothes rip or wear out, don’t throw them away! First, try fixing them (such as with Mend), but if that’s not an option consider turning them into rags. Old t-shirts work great for dusting and cleaning (and they can even be adapted as Swiffer attachments), while old socks are great for dusting smaller areas and erasing dry erase boards. You can even make a water and vinegar cleaning solution, which is cheaper than traditional cleaning products and non-toxic!

  1. Use what you’ve already got!

In an ideal world, you wouldn’t have any single-use plastics, but you probably do. So, I’d recommend finding ways to reuse plastic bottles, glass bottles, and other containers that you already have. For example, takeout containers can be used for school supplies and other small objects. Yogurt containers can make good pencil holders, while a cut-up carton could be used for potting plants or for storage. As you may realize, I enjoy storage containers. 

I hope these tips aren’t too intimidating! For those of you who may not feel that you’re making much of a difference on a macro scale, remember that you can save money and still make a sustainable dent in your own home and community.