What to do with pulp after juicing oranges?

So, I'm curious to know, what exactly is the best way to handle the pulp that's left over after juicing oranges? Is there a practical use for it, or should it just be discarded? Are there any environmental considerations that we should keep in mind when deciding what to do with the pulp? I'm hoping for some insightful answers that can help me make the most of this byproduct and potentially even turn it into something useful.