Roads here aren't paved with gold, but one day they might be paved with pig manure. And that's not a bad thing.
A new video created by the National Science Foundation explains new research into using waste from pigs to create a more environmentally friendly alternative to the petroleum-based asphalt that is currently used in roads today.
It turns out that pig manure has oils that can be used to create a petroleum-like substance, which can be mixed with sand or gravel to make a strong asphalt substitute. Researchers are currently putting the resulting bio-asphalt through its paces, making sure that it will stand up to the daily stressors of life as a road.