Vivi Loves Science: Sink or Float

Derting, Kimberly: - Kimberly Derting is the author of the Cece Loves Science series, the Body Finder series, the Pledge trilogy, and the Taking series. She lives in the Pacific Northwest, where the gloomy weather is ideal for writing anything dark and creepy. Her three beautiful (and often mouthy) children serve as an endless source of inspiration and frequently find things they say buried in the pages of their mother's books. You can visit her online at www.kimberlyderting.com.