A strange cloud appeared last week in the skies over Beijing. Glowing like a huge "mushroom", similar to what is left after a nuclear explosion, it appeared over the town about seven o'clock, and hung for about an hour. In addition, from time to time spectacular lightning illuminated the great mass of cloud, presenting an apocalyptic picture reminiscent of movies such as “Independence Day” and “War of the Worlds”.
According to the National Center for Atmospheric Research, it was just a giant cumulonimbus cloud, and its unusual shape was formed due to the fact that the cloud initially developed vertically, but after meeting with warmer layers of air began to grow horizontally.
[via The Daily Mail]