There are two main types of rainforests: tropical and temperate. Tropical rainforests receive high amounts of rainfall per year and are located along the equator, while temperate rainforests receive moderate rainfall and can be found in various locations. The largest rainforest is the Amazon Rainforest, which spans multiple countries in South America and produces 20% of the world's oxygen. However, rainforests are being destroyed at alarming rates due to activities like logging, farming, and mining. This destruction threatens millions of species and impacts the global climate.