This one comes from my own personal arsenal of pesky recycling questions: What's up with the numbers inside those raised recycling triangles on plastic containers? Are they trying to tell me something? Because apparently I haven't been listening.
The recycling questions keep rolling in. This one is from EarthFix Editor David Steves, who asked me about soiled material that would otherwise be recyclable: "I've always wondered: Can you ruin a whole batch of recycling by not washing things out?"