The mud tsunami in Nepal has brought the risk from the warming climate to mountain communities into sharp focus.Thousands of people are still missing, and the death toll is rising. Dozens of bridges have been washed away and vast sections of road obliterated, making rescue operations through the rugged Himalayan terrain even more difficult.Nepal flash floods updates: Follow this story as it unfolds with our live blog.Beyond melting ice and glacial lakes at risk of overflowing, the very ground people have built their lives on is shifting. Scientists have warned for years that a warming climate is destabilising the Himalayas,…