Few may realize it, but palm oil has quietly become one of the most ubiquitous commodities on the planet, seeping into almost every aspect of our lives, found in roughly half the products on supermarket shelves.The cheap, versatile oil is harvested and processed by millions upon millions of invisible workers hidden beneath a thick canopy of palm oil trees covering large swaths of Indonesia and Malaysia, which together produce about 85 percent of the world’s global $65 billion supply.