The Burning Earth is Yale history professor Sunil Amrith’s fifth book, and his first that focuses his academic eye on the climate crisis.
“As a citizen and then as a parent,” he says, “the climate crisis just became unavoidable in my mind.”
His first books, notably Crossing the Bay of Bengal and Unruly Waters, focused on the history of migration and ecology in Southeast Asia. The Burning Earth takes a global tack, covering the history of the climate crisis from hundreds of years ago, when the Industrial Revolution ignited the mass commodification of natural resources, to now, with the elimination of CFCs and recent climate tech. He sees history through the lens of human needs and desires, and specifically, the luxurious wants of a small slice of elites.

Sunil Amrith is the Renu and Anand Dhawan Professor of History at Yale University, with a secondary appointment as Professor at the Yale School of the Environment.
“The desires of a small elite, and the violent pursuit of inequality through empire, has turbocharged our impact on the planet,” Amrith says. As he writes in the prologue:
I can no longer separate the crisis of life on Earth from our concerns with justice and human freedom that inspired me to become a historian in the first place.
What is the main focus of the book?
The core question in The Burning Earth is really: How much is human freedom dependent on the destruction of our planet? I do not think that human flourishing necessitates the sheer and irreparable harm that we have done to our planet. I think a lot of that has been driven more by the desires and the consumption of a small elite amongst human beings.
You write about need, want and desire and how it relates to the climate crisis. How have those base human traits contributed to the climate breakdown?
I see two long-term paths towards our climate crisis. One is the story of human need. Food and shelter account for a significant part of our impact on the planet — the search for food and shelter, both of which are still very unequally accessed. And that is a long-term story, that the search for food contributes not just to greenhouse gas emissions, but overwhelmingly to biodiversity loss.
The second story we need to tell is that for at least 500 years, the desires of a small elite, and the violent pursuit of inequality through empire, has turbocharged our impact on the planet. It is the vast and disproportionate resources consumed by those with wealth and power in the world. Their identity has changed over time. For several hundred years, it was mostly Northern Europeans. And now that group of people is certainly much more distributed across the world.
You write in the book that elites looked at groups of people who are close to nature as being less human.
I think one of the questions we ask ourselves as we face this climate breakdown is, how did we ever come to believe that the health of the planet didn’t matter to all of us? And yet I think that there has been a period in global history where proportions of people around the world have acted as if it wasn’t true – that we could disregard the health of rivers and forests and simply consume at any rate we chose. That is a mentality that I do also associate with a mentality that imposes a hierarchy on other human beings.
If you look at, for example, the early colonization of the Americas, the language that the Iberian colonizers used to talk about Indigenous people is very often: they are close to nature. They are not fully human like we are. That legitimizes plunder and exploitation and violence, but it also legitimizes mass deforestation and extraction.
Was there any way, historically, to stop the inevitable march towards our climate crisis?
The motivations that are driving people to want to expand their lifespans, to improve the conditions and the security with which their families live – I never want to lose sight of those kinds of baseline human aspirations.
There are deep human dreams which you can see shared across cultures to simply want one’s descendants to have a better life, to want one’s family to continue. I do see that there is a progression in human beings’ ability and power to mold their surroundings, to make those surroundings more hospitable or more habitable for the human societies.
Then there are parts of the story which I think weren’t inevitable. There was nothing ordained about plantation production, for example, which is a very particular kind of cultivation which has to do with exploiting nature as quickly as possible for rapid gain. I think that is a very specific kind of innovation.
I think there are technologies that could have had multiple different kinds of uses. And what we’ve tended to see is that their use has been towards maximum extraction.
You write about silver mining and sugar plantations. How were these some of the earliest environmental catastrophes?
There’s no question that silver mining in the Americas was an environmental catastrophe, and we now have archaeological and genetic evidence that suggests just what a catastrophic impact that had on the health of workers. It was the use of mercury in extracting silver that was so devastating to both the landscape and above all to people’s health. That silver is at the root of what becomes a global economy.
One could probably make the argument that no single crop has caused greater harm than sugar both to human beings and to nature. Sugar began as a very, very rare luxury. It was treated as one of the fine spices in medieval Europe. And it’s only when you start to get large-scale plantation production combined with the social and economic transformations of early modern Europe that it becomes an item of mass consumption.
What effect did large scale steel and iron production have?
It’s largely a 19th century story. The age of industrialization coincides exactly with the fossil fuel era, because if we begin with coal in the second half of the 18th century, we start to see widespread use of coal first in England, then in northwestern Europe and in North America.
I think what changed more than anything else is scale – both the scale of resources that are needed for factory production, and the scale of impact that can be had. I think the story of the railroads is a classic example of this. One of my favorite works of environmental history is Bill Cronin’s book Changes in the Land, which shows how the city of Chicago really reshapes the entire American Midwest. And it does so through the rail lines. Suddenly, Chicago’s markets and exchanges become accessible. And that hastens the destruction of forests, that hastens the expansion of wheat production and monocrop production. And I think we see similar stories all over the world, which is what happens is that as people can travel further, as goods can travel further, you start to get global markets for commodities. And that pushes forward the commodification of nature, the idea that this is not a forest, this is timber, that shift in mentality.
You describe how the “war machine” is a mechanism of climate destruction.
That is the part of the book that was the biggest surprise to me. I did not expect that I would conclude that of all the forces driving climate breakdown, warfare is possibly number one. I think the two world wars came to strike me as being pivotal transformative moments, not just because of the scale of resources which went into both of those wars, but also because of the scale of destruction that those wars then made possible, culminating in atomic weapons by the end of the second world war.
Military emissions are not counted in most of our climate targets and most international contributions that have been agreed to. The best estimate we have is that military missions account for about 5% of greenhouse gas emissions, but that is a guess because we don’t know.
You write about the data project of 1957 and 1958, one of the first climate data projects. Tell me about the through line between that and the sheer amount of data we have now.
This is the International Geophysical Year, and it was this year that the Mauna Loa Observatory was set up in Hawaii, which is, to this day, sort of the gold standard that we have for measuring cumulative concentrations of carbon dioxide in the atmosphere.

The Mauna Loa Observatory in Hawaii in 2008. Ken Dewey / University of Nebraska-Lincoln School of Natural Resources
This data came during the height of the Cold War. This project is drawing in countries from both sides, drawing in countries that don’t necessarily get along. This is the data that first makes us aware that we are living through a period of unprecedented climate change.
With the acceleration the amount of data today, does it not seem to reason that more data would help our imperiled planet?
More data is undeniably important to climate scientists as they make projections and formulate their models. But more data hasn’t necessarily led to more consensus. More data has not necessarily changed the overall narrative about climate change. I think the data is essential, but I’m not sure that we’re at a point where more data is going to change more people’s minds. Those are political questions, those are cultural questions, and those are much harder to shift.
Why won’t more – and better – data change more people’s minds?
Firstly, I think in the U.S. more than anywhere else, there has been a politically motivated skepticism of that data. We know that the fossil fuel companies have been directly involved in promoting that sort of distrust all over the world. We’re in a broader populist moment of distrust of expertise. That is one reason why I think more data won’t necessarily change people’s minds.
Another is that data is complicated, and the way in which climate scientists and other earth scientists think about uncertainty doesn’t necessarily translate very smoothly into broader general consciousness.
And finally, the data is sometimes on a scale that is just unfathomable for all of us, so detached from our everyday lived experience, that I think we need more translation. And maybe that is where a creative artist, or a novelist like the great Richard Powers, have had more impact on shifting people’s awareness and consciousness perhaps than more data.
As an educator at Yale, how did researching and writing this book change what you bring to the classroom?
I’ve been teaching environmental history for about 15 years. And there are classes I’ve taught where the questions students have raised, the projects they’ve done, the conversations we’ve had in the classroom have just stayed with me. So, it’s not just what I bring to the classroom, but really what I get from the classroom that is translated directly into this book.
I think we need to bring the environment into everything, not just into environmental history, but I think we need to be thinking about these questions across our humanities curriculum. I mean, in that sense, that’s partly what I was trying to do with The Burning Earth, which was to say, let’s not separate the environmental story from perhaps more familiar stories about the rise and fall of empires, about unfree labor, about migration, about global transformations. And I think more broadly, that’s what I would love to see happen, which is a kind of weaving in of the more-than-human, the planet, the ecology into how we study literature, into how we study philosophy.
Might one of the hopes of this book be for people to look at the world around them and to realize that everything that’s made here possibly comes from a place of environmental destruction?
I would love readers of The Burning Earth to make connections between the material that I present, especially that which is most unfamiliar in their everyday lived experience. My aspiration is not to make people feel guilty. Quite the opposite. I want to give readers the impression that everything is interconnected.
This is about looking at choices with a sense of hopefulness that that means that a shift in consciousness or new forms of collective action can bring about change and perhaps even bring about change quite quickly.
As a historian, any predictions for the future?
I think we are living through a period, you know, just this decade, I think, of such unpredictable change that I think there are so many different trajectories that could lie before us, some of them terrifying, and some of them more hopeful.
The post ‘Everything Is Interconnected’: Author and History Professor Sunil Amrith on Facing the Climate Crisis appeared first on EcoWatch.
https://www.ecowatch.com/sunil-amrith-interview-burning-earth-ecowatch.html
Green Living
Guest Idea: How to Avoid Altitude Sickness on the Everest Base Camp Trek
Altitude sickness isn’t just an Everest problem. It’s a risk for any hiker venturing into high country above 3,000 meters (9,842 feet), from the Rockies and Andes to the Himalayas. Mountaineers and high-altitude climbers have understood this for decades: success at altitude isn’t about strength alone, but about pacing, acclimatization, and knowing when to stop.
Those same lessons apply directly to trekkers heading for Everest Base Camp (EBC). You can train for months, buy the best gear, and still get humbled by one thing on the trek to Everest Base Camp: altitude. One day you feel strong and excited. The next morning you wake up in Namche Bazaar (3,440 meters / 11,286 feet) with a pounding headache, no appetite, and legs that suddenly feel heavy. That’s altitude sickness, and it’s the reason many trekkers turn back before they ever reach Base Camp.
The good news? Altitude sickness is often preventable. Not with “super fitness,” but with smart pacing, proper acclimatization, good daily habits, and the right decisions at the right time.
This guide breaks everything down in a clear, practical way: what altitude sickness is, why it happens on the Everest Base Camp route, how to acclimatize properly, what symptoms to watch for, and what to do if you feel unwell. Follow these principles, and you’ll give yourself the best chance of reaching Everest Base Camp safely, and actually enjoying the journey.
What Is Altitude Sickness and Why Is It a Concern on the Everest Base Camp Trek?
Altitude sickness, also known as Acute Mountain Sickness (AMS), occurs when your body doesn’t have enough time to adapt to lower oxygen levels at high elevation. According to the Himalayan Rescue Association, symptoms can range from mild discomfort to life-threatening conditions if ignored.
It usually starts mild, but it can escalate quickly.
The three types you should know
- AMS (Acute Mountain Sickness): AMS, the most common form, begins with dizziness and difficulty sleeping; the key is recognizing AMS early so it doesn’t progress.
- HAPE (High Altitude Pulmonary Edema): This condition happens when fluid builds up in the lungs, making breathing difficult even at rest. Additional oxygen and medication are needed.
- HACE (High Altitude Cerebral Edema): An urgent medical emergency requiring immediate evacuation, HACE involves swelling of the brain that causes confusion and loss of coordination.
Why Altitude Sickness Is Common on the EBC Route
Everest Base Camp sits at 5,364 meters (17,598 feet). At this altitude, oxygen availability is roughly 50% of sea-level concentrations, according to data summarized by the CDC’s High-Altitude Travel Guidelines.
You can’t “power through” that change. Your body needs time.
The EBC trek adds extra stressors:
- Long walking days
- Cold temperatures
- Dehydration (very common at altitude)
- Poor sleep in teahouses at higher villages
These same challenges become even more pronounced for trekkers who combine the trek to Everest Base Camp with climbing Island Peak Nepal, where altitude exposure is higher and recovery margins are tighter.
Altitude sickness has nothing to do with strength. Even very fit trekkers can develop AMS if they ascend too quickly.
When Altitude Sickness Usually Starts on the Trek
Symptoms often appear above 2,500 meters (8,200 feet). On the EBC trek, this can happen quickly, especially after reaching Namche Bazaar.
Higher-risk points along the journey include:
- Namche Bazaar (3,440 meters / 11,286 feet)
- Dingboche (4,410 meters / 14,468 feet)
- Lobuche (4,940 meters / 16,207 feet)
- Gorak Shep (5,164 meters / 16,942 feet)
From around 3,000 meters (9,842 feet) onward, doing a short body check every evening becomes essential.

How to Prepare for Altitude Before the Everest Base Camp Trek
A smoother trek starts before you even land in Nepal. Preparation won’t guarantee you avoid AMS, but it helps your body cope better with stress and fatigue.
Get Your Body Trek-Ready
Aim for 8–12 weeks of training, including:
- Uphill hiking (stairs, hills, treadmill incline)
- Long walks for endurance
- Leg and core strength training
- Practice hikes with a backpack
Fitness won’t prevent altitude sickness, but it reduces overexertion, which does lower risk. This becomes especially important if your itinerary includes Island Peak climbing after Everest Base Camp, where accumulated fatigue can increase susceptibility to AMS.
Medical Check-Up
Before you travel to high-altitude destinations, speak to a medical professional if you have:
- Asthma or lung conditions
- Heart issues
- Previous history of altitude sickness
- Concerns about taking Diamox
Also ensure your travel insurance covers high-altitude trekking and helicopter evacuation, particularly if you plan additional objectives like peak climbing.
The Best Acclimatization Techniques for the EBC Trek
If there’s one rule that saves trekkers every season, it’s this:
Go slow—especially above 3,000 meters (9,842 feet). A safe itinerary includes at least two key acclimatization days:
Namche Bazaar (3,440m / 11,286 ft)
Stay two nights. Do a day hike to Everest View Hotel or Khumjung, then sleep back in Namche.
Dingboche (4,410m / 14,468 ft)
Stay two nights. Hike to Nagarjun Hill or the Chhukung ridge area, then descend to sleep.
These aren’t “rest days”, they’re altitude training days. Skipping them is one of the most common mistakes trekkers make, especially those planning to continue on to Island Peak after the EBC trek.
Hike to a higher point during the day, then return to a lower elevation to sleep. Keep acclimatization hikes steady and controlled, not exhausting missions.
Medications for Altitude Sickness: What Actually Helps
Diamox is commonly used to help with acclimatization by improving breathing at altitude. Medical guidance from sources such as the Mayo Clinic and CDC recommends it only under professional advice.
A typical preventative dose:
- 125 mg twice daily, starting 1–2 days before ascent or early in the trek
(always follow medical advice)
Diamox can help, but it never replaces proper acclimatization or descent if symptoms worsen.
Natural remedies, such as garlic soup, ginger tea, and warm fluids, can improve comfort and hydration. However, they do not replace slow ascent, acclimatization days, or descent, especially at higher elevations encountered during Everest Base Camp trekking and Island Peak climbing.
Symptoms of Altitude Sickness: What to Watch For
Early Warning Signs (AMS)
- Persistent headache
- Nausea or loss of appetite
- Unusual fatigue
- Dizziness
- Poor sleep
If symptoms are mild, do not ascend further until they improve.
Dangerous Symptoms (Medical Emergency)
According to the International Society for Mountain Medicine:
- Breathlessness at rest
- Confusion or unusual behavior
- Poor coordination
- Persistent cough or chest tightness
These require immediate descent and medical attention.
What to Do If You Get Altitude Sickness on the Trail
If symptoms are mild:
- Rest at the same altitude for 24 hours
- Hydrate and eat light, high-carb meals
- Reassess the next morning
If symptoms persist or worsen:
- Descend at least 300–500 meters (1,000–1,640 feet)
No summit, no Base Camp photo, and no peak climb is worth risking your life.
Medical Support on the EBC Trail
The Himalayan Rescue Association clinic in Pheriche, seasonal service, is the most-known medical support point. Some lodges have oxygen or emergency resources, but availability varies, another reason proper insurance is essential.
Daily Habits That Make a Huge Difference
Hydration & Food
- Drink 3–4 liters of fluids daily
- Eat high-carb meals (rice, pasta, potatoes, lentils)
- Snack regularly, appetite often drops at altitude
Dehydration makes AMS worse quickly.
Pace: Slow Beats Strong
Walk with:
- Steady breathing
- Short breaks
- No rushing or racing others
A slow trekker reaches Base Camp more often than a fast trekker who crashes in Dingboche.
Avoid These at Altitude
- Alcohol
- Smoking
- Sleeping pills or sedatives
They reduce oxygen efficiency and worsen sleep quality.
Should You Hire a Guide to Reduce AMS Risk?
A good guide helps by controlling the pace of your trek and can help with:
- Monitoring symptoms
- Managing accommodations
- Making tough calls to stop when trekkers want to push on
A knowledgable guide becomes especially important if you plan to combine the trek to Everest Base Camp with climbing Island Peak in Nepal, where acclimatization margins are tighter. If you’re unsure about altitude, hiring a guide is one of the smartest safety upgrades you can make.
Learn From Experience
If there’s one thing experienced Himalayan guides agree on, it’s this: your itinerary matters more than your fitness. You can be strong, fast, and well-trained, but if you rush the ascent, altitude sickness can still catch you off guard.
Rest days in Namche Bazaar and Dingboche aren’t optional. They’re essential for a safe Everest Base Camp trek and absolutely critical if you plan to continue on to Island Peak.
Mild AMS is a warning, not something to push through. Severe symptoms are emergencies that require immediate descent. Knowing the difference can prevent serious consequences.
And finally, remember that descending is not failure. It’s smart decision-making. Everest Base Camp, and even Island Peak, are incredible goals, but real success is returning healthy, with clear memories and respect for the mountains that allowed you to experience them.
About the Author
This sponsored article was written by Samita Maharjan of Magical Nepal.
The post Guest Idea: How to Avoid Altitude Sickness on the Everest Base Camp Trek appeared first on Earth911.
https://earth911.com/inspire/guest-idea-how-to-avoid-altitude-sickness-on-the-everest-base-camp-trek/
Green Living
Best of SIYE: Heather Terry’s Regenerative Journey At GOODSam Foods
Read a transcript of this episode. Introducing Sustainability In Your Ear transcripts.
The global food system stands at a crossroads. Climate change is reshaping where crops can grow, trade disputes threaten supply chains, and smallholder farmers who produce much of our food often have the least power in the system. Meet Heather Terry, founder and CEO of GoodSAM Foods, and discover how the company is transforming the traditional smallhold farm model by putting people and regenerative agriculture at the heart of a growing food company. GoodSAM Foods sources 90% of its ingredients directly from smallholder farms in Latin America and Africa, eliminating middlemen and reinvesting profits into farming communities. Terry’s approach is both principled and pragmatic: as climate volatility reduces crop yields globally, the companies that have built genuine relationships with farmers will have access to limited harvests. “When I’m a farmer and I suddenly have leverage, who am I going to sell that product to?” Terry asks. “It’s relationships.”

Terry’s journey to raise $9 million in Series A funding over 18 months illustrates the disconnect between traditional investors and regenerative business models. After facing skepticism from conventional CPG investors, she found success with impact investors who understood that sustainable food systems represent the future of the industry. While GoodSAM maintains USDA Organic and Non-GMO Project verification, Terry takes a critical stance on regenerative certification labels, arguing that current systems impose Global North standards on farmers who have practiced regenerative techniques for generations. Instead, GoodSAM focuses on direct relationships and on-ground verification. Her proactive approach protected both the company and its farming partners from sudden economic shocks at a time when the U.S. food system faces mounting pressures from climate impacts and trade policy changes. “Every time you pick something up off the shelf, you are voting,” Terry said. “You’re sending a signal to a company.”
You can learn more about GoodSAM Foods at goodsamfoods.com.
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Editor’s Note: This episode originally aired on September 22, 2025.
The post Best of SIYE: Heather Terry’s Regenerative Journey At GOODSam Foods appeared first on Earth911.
https://earth911.com/podcast/sustainability-in-your-ear-heather-terry-s-regenerative-journey-at-goodsam-foods/
Green Living
Earth911 Inspiration: Nothing In Vain
Aristotle, who saw purpose and design in everything, wrote in several different works that “Nature does nothing in vain.” We reply that regardless of purpose, nature does everything with grace; we are fortunate to witness the miraculous results of 13.4 billion years of experimentation.
Earth911 inspirations. Post them, share your desire to help people think of the planet first, every day. Click the poster to get a larger image.
The post Earth911 Inspiration: Nothing In Vain appeared first on Earth911.
https://earth911.com/inspire/earth911-inspiration-nothing-in-vain/
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