Learn Finnish: Tilanne kehittyy yhä. - The situation is still developing.

The verb kehittyä (to develop) comes from the transitive verb kehittää (to develop something, like a project or a skill). Adding -tyä makes it an automative verb, meaning the action happens by itself without an external doer. The situation isn't developing something else; it is just developing on its own.

Why is tilanne in the nominative case rather than being an object?

Because automative verbs like kehittyä are intransitive, meaning they cannot take a direct object. They describe a change happening to the subject itself. Here, tilanne is the subject performing the action (developing), so it stays in the basic nominative form.

The English translation says 'is developing'. How does Finnish express this ongoing action?

Finnish doesn't have a distinct present continuous tense like the English 'is doing'. The standard present tense kehittyy translates to both 'develops' and 'is developing'. The context, combined with the adverb yhä (still), makes it clear that the action is currently in progress.

Can I use vielä instead of yhä for 'still'?

Yes, you can. Tilanne kehittyy vielä is also perfectly correct. Yhä is often preferred when talking about a continuous, uninterrupted process or state, but the two are highly interchangeable here. Another common synonym you might hear is edelleen.