A happening is something that happens, an event. This term was used in the 1960's and 1970's to mean a seemingly spontaneous or artistic or musical or otherwise unusual or interesting event that occurred in a public park or on the streets.
The answer is: "how is this happening"?
happening
Happening.
what r happening to whale poppulation! what r happening to whale poppulation!
What is happening to estuaries?
is 666 happening in america
it is happening at Wimbledon
wha is happening to the temperature
How many WAR are happening?
Probability?
what is happening in the world of physics
it is happening in London.