Emily Kate Moon

The dazzling Ray illuminates how light works—part of the Science Pals series, including Drop: An Adventure through the Water Cycle and Puff: All About Air. Meet Ray. He's light! And he's been shining since time began. Wherever there's life on Earth, there's Ray, helping everything under the sun thrive. And Ray can really move—fast. Have you ever hurtled through space?...

Breathe deep and prepare to sail like the wind, with the sweetest puff of air in all the atmosphere—part of the Science Pals series, including Drop: An Adventure through the Water Cycle and Ray: How Light Works. Look who just blew in! Meet Puff. He's air. And he's a gas! Puff has been here for billions of years, forming a...

A water ride like you've never experienced before, featuring the cutest drop of water in all of precipitation—part of the Science Pals series, including Ray: How Light Works and Puff: All About Air. Meet Drop. She's water! And she's seen a thing or two. Yep, even dinosaurs; she's four and a half billion years old, after all. Everywhere Drop flows—and...