Ever wondered where rain comes from? It's a fascinating natural process! The sun heats Earth's water, turning it into vapor ...

Water moves between pools through evaporation into water vapor, transport through the atmosphere, condensation to form clouds, and returns to the surface as precipitation. At its core, the water cycle ...

The sky is a vast, empty place. Nothing up there but birds, planes, clouds — and some low-flying satellites. Virtually everything that goes up there must eventually come down since birds need to eat ...

Portland kicks off the work week with a weak system moving in from the coast bringing a few light rain showers. The National Weather Service says rain had already begun to fall early Monday near the ...