Scotch Moss isn't actually moss - it's an evergreen perennial shrub that grows low to the ground. It's also perfect for a desktop pet plant!
Plants are natural air purifiers. We put out a heck of a lot of carbon, and all plants will help reduce that to some degree. The only issue is that carbon isn't the only thing we're putting into the atmosphere. Our atmosphere indoors, where we're spending so much time, is incredibly important. We put out a few other notable bad chemicals in the course of daily living - ammonia, benzene, formaldehyde, trichloroethylene, and xylene. Check here for some plants that can clean your air!
This is a detailed guide on how to care for Tillandsia (air plants). These are strange, bundled-up plants that drink water from everywhere but their roots. They make for great plant pets!