Learn Hardcore German: Recyceln spart Geld.

In German, all nouns are capitalized. Recyceln is a nominalized infinitive (an infinitive used as a noun), so it follows the noun‐capitalization rule.

Is Recyceln acting as a verb or a noun in this sentence?

It’s acting as a noun (a nominalized infinitive) and functions as the subject of the sentence.

Why isn’t there an article before Recyceln, like das Recyceln?

When you talk about an activity in general, German often lets you use the nominalized infinitive without an article:
• Recyceln spart Geld.
Adding das (→ Das Recyceln spart Geld.) is also possible but more formal or emphatic.

Why doesn’t Geld have an article? Shouldn’t it be das Geld?

Geld is an uncountable, abstract noun. When speaking about money in general, German frequently omits the article.

What case is Geld in, and how do you know?

It’s in the accusative case as the direct object of spart. Since Geld has the same form in nominative and accusative, you rely on its role after the verb.

Why is the verb spart and not spare or spartst?

The subject Recyceln is treated as a third‐person singular noun. Therefore the verb takes the third‐person singular form spart.

Can I rephrase this with man? For example, Durch Recyceln spart man Geld?

Yes. That sentence means the same thing. You’re shifting from a nominalized‐infinitive subject to an impersonal man construction, and you add durch to show “by means of.” Both are correct.