Peat comes from peat bogs, mainly in Canada, where decomposing sphagnum moss piles on top of itself. This creates the light, soil-like material that can be used agriculturally. Peat is usually mined, and in some case entire acres of land are dug up for agricultural use.
Peat is sourced from decayed sphagnum moss that has been composting for millions of years, which is then mined out. It takes much longer for the moss to come back than humans take from the bogs, making it much less ecological.
Coco is actually a by-product of the coconut industry, making it a renewable resource. Mostly sourced from India and Sri Lanka, coco fibers are the husks of coconuts either decomposed or ground up. The end product is very similar to peat moss, but each has their differences.
When it comes to coco and peat, is one really better than the other? Each has their pros and cons, and can be extremely beneficial in certain grow environments. Peat may contain tons of beneficial microorganisms, but it took them millions of years to develop, and resources could be limited. Coco might not be chock-full of life, but it is renewable, and lets you feed your plants more so they can grow bigger.
The best way to figure out which one is truly better is to test it yourself! Plant one seed or clone in coco, and another in peat, then compare your results and let us know which worked best!