Melting permafrost washes through Tibetan grasslands

An astonishing video has emerged online showing a large section of mud and grass sliding down a hill in north-west China last Thursday. The flow was confirmed by local experts to be melting permafrost.

An astonishing video has emerged online showing a large section of mud and grass sliding down a hill in north-west China last Thursday.The flow was later confirmed by local experts to be melting permafrost, a natural phenomenon in which thawing ice, mud and grass slide down from higher altitudes due to gravity.About 40 herders from nine households had to be evacuated due to the incident, according to local news media. The thawing permafrost brought down the mud and grass from the Tibet...