Learn Turkish: Devenin kışın üşüyor olması büyük bir problem. - It is a big problem that the camel is feeling cold in the winter.

Using the standard verbal noun üşümesi would just mean "the camel's getting cold" in a general or timeless sense. Using üşüyor olması combines the present continuous suffix -ıyor with the verbal noun olması (being). This emphasizes the ongoing, continuous aspect of the state—translating more precisely to "the fact that the camel is feeling cold."

Why does "camel" take the genitive case as devenin instead of just being deve?

The entire phrase devenin kışın üşüyor olması is a nominal clause acting as the subject of the main sentence. In Turkish nominal clauses, the subject of the action takes the genitive case (here, -nin) and the verb takes a possessive suffix (here, the -sı on olması). Literally, you are saying "the camel's being cold."

What is the -ın suffix on kışın doing? Is it another genitive ending?

No, it's not a genitive case here. The -ın or -in suffix is an older adverbial ending used with seasons and times of day to mean "during" or "in the." It turns the noun kış (winter) into the adverb kışın (in the winter). You will also see this in words like yazın (in the summer) and güzün (in the autumn).

Why is the word order büyük bir problem instead of ?