25 Schools responsible for the greatest advances in Science

According to Wikipedia, CUNY alumni have never won the Turing Award.
One CCNY alumnus (Jesse Douglas, BA 1936) won the Fields Medal.
12 CUNY Bachelor’s degree recipients, including Hunter and Brooklyn College alumni, have won the Nobel (plus Henry Kissinger, who attended but did not graduate from CCNY). That makes 13 Nobel/Fields winners for the CUNY system during the ~50 year period, which is the quartz.com number (but apparently 10 Nobel/Fields winners for CCNY alone.)

https://en.wikipedia.org/wiki/List_of_Turing_Award_laureates_by_university_affiliation
https://en.wikipedia.org/wiki/List_of_Fields_Medal_winners_by_university_affiliation
https://en.wikipedia.org/wiki/List_of_Nobel_laureates_by_university_affiliation#Other_universities

CCNY also was in the top 10 among schools where PhDs went to undergrad, once upon a time. Basically, back when the Ivies discriminated against Jews, CCNY ended up with a ton of talent.