Agriculture, particularly rice farming, is strongly linked to Bali’s social, cultural, and religious way of life. Subak, the water irrigation system on which the rice cycle is based, was introduced in Bali over a thousand years ago. As early as the 9th century, some inscriptions referred to irrigation water tunnels and canal builders that worked to supply the much-needed water throughout Bali from the mountain lakes. Over the centuries, these builders have honeycombed the island with their tunnels and terraces. This system, for the irrigation of rice fields, is the bedrock of Balinese agriculture and, by extension, Balinese life. A complex social system has evolved around temples, local rulers, and farming communities. Water temple priests who practice Tri Hita Karana Philosophy, a self-described balanced relationship between Humans, the Earth, and the Gods, are in charge of this traditional ecologically sustainable system. However, much of the traditional agricultural system, including the Subak, has shifted significantly since the Green Revolution. With intensive use of agrochemicals, the rice yield increased from 2 crops yearly to 3. However, that productivity has resulted in damage to the soil, the environment, and the wider ecological system, as well as pushing the farmers to be highly dependent on chemicals. The excess agrochemicals run into rivers and ultimately into the sea, destroying offshore corals. Steven Lansing, an American anthropologist, has studied this situation since 1985.