An endangered species is a species of organisms facing a very high risk of extinction. The phrase is used vaguely in common parlance for any species fitting this description, but its use by conservation biologists typically refers to those designated Endangered in the IUCN Red List, where it is the second most severe conservation status for wild populations, following Critically Endangered.
I measure my happiness 2 ways. 1  Through a (random and irregular) process of self reflection.  2 Catching myself being happy and remembering the last time I caught myself being happy and trying to determine the time between them.
1 In We Happy Few the player has a meter measuring how much of the Joy drug is in their system. 2  As the meter fills things look nicer, brighter and cheerier. 3  If it fills completely then everything is fine, and there's no need to run around and break into people's houses for food.