Flash floods struck Nepal after many new hydroelectric dams were constructed.
The floods were intense, showing that altering rivers can have serious effects.
Environmental experts call the event "nature's revenge" because of human changes.
They suggest improving public transport and protecting natural river areas.
Scientists say that building lots of hydroelectric power plants in the mountains changed how rivers flow.
The floods are a sign that nature is reacting to too much building and development.
Experts recommend using more buses, bikes, and trains instead of building more roads and cars.
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