Dunbar's number suggests humans can comfortably maintain 150 stable relationsihps

1. By extrapolating the correlation between the neocortex size of 38 species of primates and their average social group size, British anthropologist Robin Dunbar suggested humans can maintain about 150 stable relationships (95% CI 100-230).

The nomenclature hurricane, cyclone, and typhoon refers to the location of the same weather phenomenon.

1. The nomenclature hurricane, cyclone, and typhoon refers to the location of the same weather phenomenon. Hurricanes occur in the Atlantic and Northeast Pacific. Typhoon is the term used for Northwest Pacific and in the South Pacific and Indian Ocean, the event is called a cyclone.

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A total of 15 states and 5 US territories hold Caucuses.

1. A total of 15 states and 5 US territories hold Caucuses.


A full list of states can be seen here