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 ...

New research suggests that about 3.6 billion years ago, Mars featured vast water flows and a lake rivaling the size of the ...

The water cycle is the journey water takes as it moves from the land to the sky and back again. It follows a cycle of evaporation, condensation, precipitation and collection. The sun heats up ...

Humanity has thrown the global water cycle off balance “for the first time in human history,” fueling a growing water disaster that will wreak havoc on economies, food production and lives ...

Insulation provided by carbon dioxide ice above the martian polar caps could explain many of the Red Planet’s ancient river features.