Hemram Pegu has been forced to rebuild his home at least eight times in the past decade, shifting it a few meters inland every time heavy rains cause the Brahmaputra River to surge into his village of Besemora, in northeast India.

As a member of the indigenous Mising tribe, who have lived along the Brahmaputra and its tributaries for generations, Pegu remembers taking pride in being able to interpret the behavior of one of the Earth's longest river systems.

But today, he said, the community is baffled by its unpredictable nature.