To hear the many languages of New York, just board the subway.
The number 7 line, which leads from Flushing in Queens to Times Square in the heart of Manhattan takes you on a journey which would thrill the heart of a linguistic anthropologist.
Each stop along the line takes you into a different linguistic universe - Korean, Chinese, Spanish, Bengali, Gujarati, Nepali.
And it is not just the language spoken on the streets that changes.
Street signs and business names are also transformed, even those advertising the services of major multinational banks or hotel chains.
In the subway, the information signs warning passengers to avoid the electrified rails are written in seven different languages.
But as I have discovered, New York is not just a city where many languages live, it is also a place where languages go to die, the final destination for the last speakers of some of the planet’s most critically endangered speech forms.