<human>:  What are the different types of Buddhism practiced in the world?
<bot>: The most common types of Buddhism practiced in the world today are Theravada, Mahayana, and Vajrayana. Theravada Buddhism is the oldest and most traditional form of Buddhism, having been around for over 2,000 years. Mahayana Buddhism is known for its popular scriptures, such as the Lotus Sutra, and its widespread practice in East Asia. Vajrayana Buddhism is a more esoteric form of Buddhism, focusing on more advanced meditation techniques and visualization practices, typically found in Tibet, Nepal, and Mongolia. Other forms of Buddhism include Zen, Pure Land, and Nichiren.