Summary:

- The article discusses the concept of evapotranspiration (ET), which is the process by which water is transferred from the Earth's surface to the atmosphere through evaporation and transpiration. The author argues that ET is an "unexplored source of climate change" and deserves more attention in the climate change discussion.

- The article suggests that changes in ET patterns, driven by factors such as land use and vegetation changes, can have significant impacts on the climate, potentially contributing to phenomena like drought, flooding, and temperature fluctuations. The author emphasizes the need for a better understanding of the role of ET in the climate system.

- The article calls for more research and attention to be paid to the influence of ET on climate change, highlighting the potential for this process to provide important insights and inform climate change mitigation and adaptation strategies.