Glacial Floods, Climate Change, and What the U.S. Can Learn from the Himalayas Disaster

Field evidence of sediment aggradation.
Field evidence of sediment aggradation. (A to F) Photographs taken along the Teesta River show the aggradation of the sediments transported by the flood cascade and its impact. Latitude, longitude, and elevation (in m a.s.l) are at top right; locality name and distance from SLL are at bottom right. Photo credits: Praful Rao (study co-author).

A Disaster Unfolds

Imagine waking up in the middle of the night to a roaring wall of water crashing through your town. That’s what happened in Sikkim, India, on October 3, 2023. A glacial lake high in the Himalayas burst suddenly, sending a flood of 50 million cubic meters of water rushing downstream. Villages were washed away, bridges collapsed, and a massive hydropower dam was completely destroyed.

The flood traveled 385 kilometers, even reaching parts of Bangladesh. This was no ordinary flood—it was a Glacial Lake Outburst Flood (GLOF), a type of disaster that’s becoming more frequent as the planet warms.

What Caused the Flood?

At the heart of this disaster was South Lhonak Lake, one of the fastest-growing glacial lakes in the Himalayas. Scientists have been watching it for years, warning that its natural dam—made of ice and rock—was getting weaker.

Then, the worst happened:

  • A 14.7-million cubic meter chunk of frozen land collapsed into the lake.
  • This triggered a 20-meter-high wave—as tall as a six-story building.
  • The wave smashed through the natural dam, sending a torrent of water and debris barreling down the valley.

Think of it like a bathtub overflowing, except instead of a few gallons of water, it was millions of tons rushing out all at once.

The Impact: Lives, Land, and Infrastructure Lost

The destruction was swift and brutal:

  • 55 people lost their lives, and 74 are still missing.
  • More than 7,000 people were displaced, their homes and villages washed away.
  • 31 bridges, 25,900 buildings, and 276 square kilometers of farmland were destroyed.
  • The flood carried away 270 million cubic meters of sediment—enough to fill 100,000 Olympic-sized swimming pools.

Entire communities were left without power, food, or clean water, and the road to recovery is long.

The Role of Climate Change

So, why did this happen? The simple answer: climate change.

  • The South Lhonak Glacier has been melting faster than ever, losing 0.58 meters of ice every year.
  • The lake it feeds has grown dramatically in the past few decades.
  • Warming permafrost (frozen soil) is making mountain slopes unstable, increasing the risk of landslides and dam failures.

This isn’t just a Sikkim problem—glaciers around the world are melting at record speeds, putting millions of people at risk.

Could This Happen Again?

Unfortunately, yes. Scientists warn that South Lhonak Lake is still unstable.

  • The natural dam is eroding, making another flood likely.
  • Riverbanks weakened by the last flood could collapse, leading to more destruction.
  • Extreme rainfall—which is increasing due to climate change—could trigger another disaster.

And it’s not just Sikkim—other glacier-fed lakes in the Himalayas, the Andes, and even North America are showing similar warning signs.

Why This Matters

If you think this is just a distant problem, think again. The same climate forces that caused the Sikkim flood are also affecting other mountainous regions worldwide.

Melting Glaciers Are a Global Issue

Glaciers are retreating in Alaska, the Rocky Mountains, and the Pacific Northwest. As ice melts at a faster rate, more glacial lakes are forming, increasing the chances of floods like the one in Sikkim. If we don’t prepare, communities in mountainous regions of the U.S. could face similar disasters.

U.S. Disasters Are Increasing

The 2022 Yellowstone flood destroyed roads, bridges, and homes, forcing many residents to evacuate. In California, record-breaking storms and floods are becoming more frequent, causing billions in damage. Extreme weather events—whether floods, hurricanes, or wildfires—are getting stronger, deadlier, and harder to predict.

Our Infrastructure Is at Risk

Just like the Teesta-III dam in Sikkim collapsed, many worldwide dams, roads, and power plants are vulnerable to extreme weather. Many of these structures were built decades ago and weren’t designed to handle the kinds of disasters we’re seeing today.

We Can Learn

By taking action now, the U.S. can prevent similar disasters:

  • Invest in early warning systems—monitor unstable lakes and glaciers.
  • Upgrade infrastructure—build flood-resistant bridges and roads.
  • Plan for extreme weather—ensure communities are prepared for disasters.

Preventing Another Tragedy

While we can’t stop glaciers from melting overnight, we can take steps to reduce the damage.

Early Warning Systems (EWS)

Science and technology give us powerful tools to predict disasters before they happen. Governments and scientists must monitor unstable lakes and glaciers using satellites, sensors, and AI-driven models. These systems can detect early signs of danger, giving communities valuable time to evacuate before disaster strikes. Investing in real-time alerts and community education could save thousands of lives.

Building Stronger Infrastructure

We need to rethink how we design bridges, roads, and power plants. Structures built decades ago were not designed to handle the kinds of extreme weather we’re facing today. Engineers and policymakers must ensure that new infrastructure is flood-resistant and that existing structures are reinforced to withstand future disasters. This kind of investment is expensive, but the cost of doing nothing is far greater.

Preparing for Disasters

Education and preparation can mean the difference between life and death. Governments and communities must train people on emergency evacuation plans and improve international cooperation to respond to climate disasters. Since floods and other extreme weather events are increasing, being prepared is no longer optional—it’s essential.

Addressing Climate Change at Its Root

At the core of these disasters is a warming planet. To slow down glacial melting, we need to cut greenhouse gas emissions. Governments, businesses, and individuals can all play a role by switching to clean energy sources, reducing waste, and advocating for policies that combat climate change. These actions will protect glaciers, and help stabilize global weather patterns.

A Wake-Up Call

The Sikkim flood wasn’t just a freak event—it was a preview of what’s to come if we don’t act now. The good news? We still have time to prepare. By investing in early warning systems, better infrastructure, and climate solutions, we can reduce the risk of future disasters—both in the Himalayas and here at home.


Source: Sattar, A., Cook, K. L., Rai, S. K., Berthier, E., Allen, S., Rinzin, S., Van Wyk de Vries, M., Haeberli, W., Kushwaha, P., Shugar, D. H., Emmer, A., Haritashya, U. K., Frey, H., Rao, P., Gurudin, K. S. K., Rai, P., Rajak, R., Hossain, F., Huggel, C., … Younis Bhat, S. (2025). The Sikkim flood of October 2023: Drivers, causes, and impacts of a multihazard cascade. Science.

How Fossil Fuels, Plastics, and Agrichemicals Delay Climate Action

Split-screen visual with two contrasting scenes: Left Side: A sandy beach littered with plastic waste, including plastic bottles, straws, and various other trash items, emphasizing pollution and environmental degradation. Right Side: A serene and clean beach at sunset, with a golden sun reflecting on the calm waves of the ocean, symbolizing natural beauty and a sustainable, unpolluted environment. The image symbolizes the contrasts between environmental harm and the potential for a clean, thriving ecosystem.
Split-screen visual with two contrasting scenes: Left Side: A sandy beach littered with plastic waste, including plastic bottles, straws, and various other trash items, emphasizing pollution and environmental degradation. Right Side: A serene and clean beach at sunset, with a golden sun reflecting on the calm waves of the ocean, symbolizing natural beauty and a sustainable, unpolluted environment. The image symbolizes the contrasts between environmental harm and the potential for a clean, thriving ecosystem.

Unmasking Climate Obstruction

Climate change is one of the most pressing issues of our time, but did you know that some of the biggest industries in the world are working together to block meaningful action? Fossil fuels, plastics, and agrichemicals are deeply connected, and they often use clever strategies to delay or deny the need for urgent climate action. These industries are obstructing progress and impacting on our planet as well as the health of ourselves and our loved ones.

Fossil Fuels and Climate Change

The Root of the Problem

Burning fossil fuels like coal, oil, and gas is the main driver of climate change. These fuels release greenhouse gases, such as carbon dioxide, into the atmosphere. These gases trap heat, causing the Earth’s temperature to rise. This leads to more extreme weather, rising sea levels, and harm to ecosystems and biodiversity.

But the problem doesn’t stop there. The fossil fuel industry is deeply connected to two other major industries: plastics and agrichemicals. Together, these industries form a powerful network that resists policies aimed at reducing fossil fuel use.

Plastics and Agrichemicals: Hidden Contributors

Plastics and Pollution

Plastics are made from fossil fuels, and their production contributes significantly to climate change. Every year, millions of tons of plastic waste end up in our oceans, harming marine life and ecosystems. Over time, plastics break down into tiny particles called microplastics, which pollute water, soil, and even the food we eat.

Agrichemicals and Their Impact

Industrial farming relies heavily on chemicals like fertilizers and pesticides, which are also made from fossil fuels. These chemicals can contaminate water sources, harm wildlife, and disrupt ecosystems. For example, pesticides can kill beneficial insects like bees, which are crucial for pollinating crops. Fertilizers can cause algal blooms in water bodies, leading to “dead zones” where marine life cannot survive.

How Industries Block Climate Action

Social Media and Misleading Messaging

Companies in these industries often use social media platforms like X to spread messages that downplay the urgency of climate action. They ignore the problem of our reliance on fossil fuels. For example, ExxonMobil has promoted carbon capture technology as a solution, but this technology is not yet widely used and doesn’t address the continued extraction of fossil fuels.

Shifting Blame to Individuals

Instead of taking responsibility, these industries often shift the blame to individuals. They might encourage people to recycle more or use less water, while ignoring their own role in creating pollution and climate change. This tactic distracts from the need for large-scale, systemic changes.

Greenwashing

Many companies engage in “greenwashing,” where they make themselves appear environmentally friendly without taking meaningful action. For instance, they might highlight small sustainability projects while continuing to expand fossil fuel production. This creates a false impression that they are part of the solution, when in reality, they are part of the problem.

Lobbying Against Change

These industries spend millions of dollars lobbying governments to resist stricter environmental regulations. They argue that such rules would hurt the economy and cost jobs, even though these regulations are essential for protecting the planet and public health.

Impact on Biodiversity and Health

Harm to Wildlife

The production and use of fossil fuels, plastics, and agrichemicals have devastating effects on biodiversity. For example:

  • Plastics harm marine life, with animals like turtles and seabirds often mistaking plastic for food.

  • Pesticides kill beneficial insects like bees, which are vital for pollinating crops and maintaining ecosystems.

  • Fossil fuel extraction destroys habitats and contributes to deforestation, threatening endangered species.

Health Risks

These industries also pose serious risks to human health:

  • Air and water pollution from fossil fuel extraction and processing can cause respiratory diseases and other health problems such as cancer.

  • Chemicals from plastics and agrichemicals can contaminate drinking water and food supplies, leading to long-term health issues, including cancer.

What Can We Do?

Raise Awareness

One of the most important steps is to raise awareness about how these industries work together to block climate action. Share articles like this one, and talk to friends and family about the issue. The more people know, the harder it will be for these industries to continue their obstruction.

Support Stronger Regulations

Advocate for policies that limit fossil fuel production and promote clean energy. Contact your local representatives and let them know that you support stricter environmental regulations.

Reduce Your Reliance on Plastics and Chemicals

While individual actions alone won’t solve the problem, they can still make a difference. Reduce your use of single-use plastics, choose organic foods when possible, and support sustainable farming practices.

Hold Companies Accountable

Support organizations and campaigns that hold fossil fuel, plastic, and agrichemical companies accountable for their actions. Look for brands that are genuinely committed to sustainability and avoid those that engage in greenwashing.

Summing Up

The fossil fuel, plastics, and agrichemical industries are deeply connected and often work together to resist climate action. They use social media, lobbying, and misleading messaging to delay or deny the need for urgent action, all while continuing to harm the environment and public health. To address climate change, we need to look beyond just energy and focus on the entire petrochemical industry, including plastics and agrichemicals.

By raising awareness, supporting stronger regulations, and making sustainable choices, we can push back against these industries and work toward a healthier, more sustainable future. Together, we can unmask climate obstruction and demand real action for our planet.


Source: Kinol, A., Si, Y., Kinol, J., & Stephens, J. C. (2025). Networks of climate obstruction: Discourses of denial and delay in US fossil energy, plastic, and agrichemical industries. PLOS Climate, 4(1), Article e0000370. https://journals.plos.org/climate/article?id=10.1371/journal.pclm.0000370.

How Climate Change Is Changing Our Coastal Forests

Map of change between sampling intervals in forest area for low and mid elevation (crossed) counties derived from the FIA.
Map of change between sampling intervals in forest area for low and mid elevation (crossed) counties derived from the FIA. Vector shapefiles were retrieved from the U.S. Census Bureau.

Imagine driving along the coast and seeing rows of lifeless trees standing in pools of water—gray, leafless, and eerie. These “ghost forests” are appearing along the eastern United States, and they tell a sobering story about how climate change is reshaping our coastal landscapes. Coastal forests, which provide critical benefits to both people and wildlife, are disappearing or transforming at an alarming rate.

What Are Coastal Forests and Why Are They Important?

Coastal forests are unique woodlands found near the shorelines of oceans, bays, and estuaries. These forests thrive in areas with a mix of salty and fresh water, making them different from inland forests.

Coastal forests are essential for:

  • Wildlife Habitat: They provide homes for birds, fish, and other animals that rely on both land and water ecosystems.

  • Flood Protection: Their trees and soil act as natural barriers, absorbing water and reducing the impact of floods and storm surges.

  • Carbon Storage: Coastal forests capture and store large amounts of carbon dioxide, which helps slow the pace of global warming.

These vital ecosystems are under threat. Rising sea levels, stronger storms, and higher temperatures are causing widespread damage. Many trees are dying, leaving behind ghost forests where thriving woodlands once stood.

How Climate Change Is Impacting Coastal Forests

Climate change is reshaping coastal forests in profound ways, driven by rising sea levels, stronger storms, and increasing temperatures. Each of these factors contributes to the gradual transformation of these ecosystems, creating significant challenges for their survival.

  • Sea Level Rise: As sea levels rise, saltwater moves further inland, soaking the roots of trees that cannot survive in salty conditions. Over time, these trees die, creating ghost forests. Areas like the Chesapeake Bay have seen this transformation accelerate, as low-lying forests succumb to saltwater intrusion.

  • Stronger Storms: Hurricanes and tropical storms are becoming more intense due to climate change. These storms knock down trees, flood forest areas, and create conditions that make it harder for new trees to grow. While some forests recover, many do not, leading to a permanent loss of trees and wildlife habitats.

  • Warming Temperatures: Rising temperatures put stress on coastal forests by changing the types of trees and plants that can survive. Warmer weather can also make forests more vulnerable to pests and diseases, further accelerating tree loss.

What This Means for Us

The disappearance of coastal forests has far-reaching consequences that go beyond the trees themselves. From influencing the global climate to protecting communities and wildlife, these ecosystems play a critical role in maintaining balance.

  • Carbon Storage: Coastal forests are powerful carbon sinks, meaning they absorb and store carbon dioxide from the atmosphere. When these forests die, they release this stored carbon back into the air, worsening global warming.

  • Flood Protection: Without coastal forests, communities are more exposed to flooding and storm surges. These natural barriers are irreplaceable in their ability to protect homes, roads, and other infrastructure from water damage.

  • Wildlife Impact: The loss of coastal forests means many animals lose their homes. Birds, amphibians, and fish that rely on these ecosystems are forced to relocate—or they may not survive at all.

What Can Be Done?

While the challenges facing coastal forests are significant, there are practical steps we can take to protect and restore these vital ecosystems. From preserving existing forests to adapting to the realities of climate change, these actions offer hope for the future.

1. Protect Existing Forests

Taking steps to safeguard the forests we still have is crucial for their survival.

  • Limit construction and development near coastal areas to reduce stress on these ecosystems.
  • Establish protected zones where forests can thrive without human interference.

2. Plant More Trees

Replanting trees native to the land can restore damaged forests and strengthen their resilience against climate change.

  • Reforestation efforts can help rebuild damaged areas and increase the number of trees that store carbon.
  • Focus on planting salt-tolerant species, native to the land, in vulnerable areas to adapt to rising sea levels.

3. Adapt to Climate Change

Adapting to the realities of climate change can help protect coastal forests and ensure their long-term survival.

  • Build barriers or channels to prevent saltwater from reaching inland forests.
  • Use technology and research to monitor changes in forest health and plan for future challenges.

Summing Up

Coastal forests are lifelines for wildlife, shields against floods, and crucial allies in the fight against climate change. Saving these forests matters, not only for the environment but also for the well-being of communities that rely on them. Conservation efforts and innovative solutions are helping some coastal forests recover. And, with collective action, we can ensure these vital ecosystems continue to thrive for generations to come.


Source: Ardón, M., Potter, K. M., White, E., Jr., & Woodall, C. W. (2025). Coastal carbon sentinels: A decade of forest change along the eastern shore of the US signals complex climate change dynamics. PLOS Climate, 4(1), e0000444. https://doi.org/10.1371/journal.pclm.0000444. See the data.