general_fact: 24977 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 24977 is a boring number.
trivia: 24977 is a boring number.
historical_date: May 19th is the day in 1997 that the Sierra Gorda Biosphere, the most ecologically diverse region in Mexico, is established as a result of grassroots efforts.