Science can be weird. What's the purpose of snot? How do we taste flavors? Why do polar bears look white if their skin is black? In How the Heck Does That Work?! series, readers will explore the science behind how things work from plants to space to the human body. This high-interest series is written at a low readability to aid struggling readers. Educational sidebars include a science activity, a spotlight biography, fast facts, and an unsolved mystery! A table of contents, glossary of keywords, index, and author biography are included.