Water in the Air reveals the varied phases of water that surround us, fall on us, travel in air, and serve as a crucial component of the water cycle. Emphasis is on the fact that water in air can be vapor or solid, visible or invisible,...

Weather forecasting requires observation. Beyond the things we can see, hear and sense, meteorologists need detailed data to observe distant weather, whether that is distant along the ground, or distant up into the sky. Weather...

Weather forecasting requires observation. Beyond the things we can see, hear and sense, meteorologists need detailed data to observe distant weather, whether that is distant along the ground, or distant up into the sky. Weather...

A little girl and her grandfather spend a summer afternoon sitting by a pond. The conversation changes from how warm the summer day is to how the pond gets cold and freezes in the winter. The grandfather helps the girl understand how the...