The largest rainforest in the world is the Amazon Rainforest, located primarily in South America. Stretching across several countries including Brazil, Peru, and Colombia, the Amazon covers over 5.5 million square kilometers and is renowned for its incredible biodiversity. It is home to millions of species of plants and animals, many of which are not found anywhere else on Earth. The Amazon plays a crucial role in regulating the global climate and is often referred to as the "lungs of the planet" because it produces a significant portion of the world’s oxygen and absorbs vast amounts of carbon dioxide.