When we hear the word “flood,” we usually look at the sky. How much did it rain? Was there a storm? Was there a cloudburst?
But the devastating flood that swept through the Himalayas along the Nepal-Tibet border this week was different. There was no major rainfall causing the sudden wall of water. Scientists believe the disaster began high in the mountains, when a huge mass of ice and rock collapsed from near Langtang Lirung and crashed into the river valley below. The collapse set off a chain reaction of water, mud, rock, and ice that rushed through communities downstream.
The exact cause of the collapse is still being studied, and scientists are careful not to blame any single event entirely on climate change. But they are also warning us that the mountains themselves are changing. As temperatures rise, glaciers melt, ice that once helped hold steep slopes together disappears, and cycles of freezing and thawing change. All of this can make rock and ice less stable. Across the Hindu Kush Himalaya, the rate of glacier ice loss has roughly doubled since 2000.
What struck me is that the warning signs of a changing Himalaya do not come only from glaciers.
They come from living things too.
Scientists are finding animals in places where they were rarely seen before. A Bengal tiger was recently photographed more than 3,000 meters above sea level in a Himalayan glacier valley. Researchers are also seeing changes in the seasonal movements of Himalayan birds as warming alters when the insects they depend on appear. Animals are adjusting where they live, when they move, and how they survive because the environment around them is changing.
That does not mean animals predicted this particular flood. But perhaps we should become better at listening to what nature is telling us.
I have always believed that when an environment is no longer safe for animals, eventually it will not be safe for humans either. We often talk about protecting animals as though humans are standing outside of nature, generously deciding to save other species. But we share the same water, temperatures, forests, oceans, mountains, and atmosphere. The conditions that allow animals to survive are also the conditions that allow us to survive.
The tragedy in the Himalayas makes that connection painfully clear.
For those who lost their lives, may they rest in peace. For the families still searching for loved ones, I hope they find answers and support.
But after the mourning, there should also be urgency.
Nature rarely changes all at once. Ice retreats. Rivers change. Birds arrive at the wrong time. Animals move into unfamiliar territory. A mountain that seemed permanent becomes less stable. Each change may appear small or far away until one day the consequences arrive downstream, where people live. We should not wait for that final moment before we decide that the warning was real.
The animals are adapting. The glaciers are retreating. The mountains are changing. We should be paying attention.
Daniel Kim, August 2026