On what island are one third of the languages spoken?

This is a bit of a trick question! There's no single island where one third of the world's languages are spoken.

Here's why:

* Language diversity is spread across the globe. There are thousands of languages spoken on every continent.

* Island populations are generally smaller. While some islands have unique languages, they don't hold a significant portion of the world's total language diversity.

To find out where the most languages are spoken, you'd need to look at regions or continents, not individual islands.