The effects of climate change, including higher surface temperatures, floods, droughts, severe storms and sea level rise, put Thailand’s rice crops at risk and threaten to submerge Bangkok within 20 years. The damage to agriculture, coastal tourism, and the capital city as consequences of climate change will have enormous economic, cultural and environmental impacts: one degree of warming will destroy the rice crops that are central to the economy, and a few centimeters of sea level rise will submerge the capital city and devastate coastal tourism. Thailand’s mitigation and adaptation efforts include a slow shift to organic agriculture, a tsunami warning system along the Andaman Sea, the construction of a flood prevention wall around Bangkok, and an Action Plan to reduce greenhouse gas emissions from vehicles and energy use.