The PBS television host and his team of young scientists investigate how the water cycle works by shrinking themselves down to the size of a raindrop to explore such elements as ice, steam, estuaries, snowflakes, and puddles.

Discusses various aspects of water, including the water cycle, tides, and water pollution.

"A raindrop has billions of stories to tell. In fact, THIS raindrop has been here since time began! Dive into this beautiful tale of how water has been flowing and falling all around us, fueling and forming much of what we have seen and used for millions of years."--Back cover.