Through the Window

My main interest of the past four years is water on Earth: oceans, rivers, and clouds. We can forget, actually, that clouds are airborne water. Water is what makes our world a habitable planet. Earth's water is almost everywhere: above the Earth in the air and clouds; on the surface of the Earth in rivers, oceans, ice, and essential within the bodies of plants and other living organisms; and deep inside the Earth, hidden.