Within three minutes, this cloud, absorbing more gases from the fire below, was banking down the walls and filling the living room.

NEWYORKER: Trial by Fire

Ernie and Tone walked me around the walls one day, filling in the background on some of the names and faces pasted there.

BBC: South East Wales - Boxing Beats: Fighting Pretty

In the Himalayas alone, some 44 glacier lakes are filling so rapidly that they could burst their debris retaining walls in the next four or five years, in what are known as 'glacial lake outburst floods' (GLOFs).

UNESCO: 83e