I encountered these sentences in Memrise:
Engländer lieben es über das Wetter zu reden.
Junge Leute lieben über Filme und Musik zu reden.
What is the role of es in the first sentence? Why is it absent in the second sentence?
I guess it has something to do with the object being plural (Filme und Musik) instead of singular (das Wetter), but is there a general rule? Are there other verbs following the same pattern?