Students will be able to develop and explain a particle-level model to describe evaporation and condensation in the context of the water cycle. The water cycle depends on the processes of evaporation ...

This water, now over 4.5 billion years old, has been perpetually renewed through Earth's water cycle. My research team has recently proposed a new theory to explain how water first arrived on Earth.

Glaciers are melting faster than ever. As the planet gets hotter, our frozen world is shrinking, making the water cycle more unpredictable. For billions of people, meltwater flows are changing ...