The fossil fuels powering cars, trains, and planes are harming the environment, but scientists are creating innovative and clean transportation solutions.
Readers follow along as the moon shifts from new to full and back again, learning the words for each lunar phase and how the sun's light creates the moon shapes they see in the sky.
Follow along with Garfield as he explores breakthroughs in technology, from the earliest stone tools to modern times, when silicon computer chips and GPS are commonplace.
In addition to speaking about challenging scientific topics for a variety of news sources, Neil deGrasse Tyson is director of a New York planetarium, hosts a science podcast, and has a following of more than three million on Twitter.