This book explores and explains scientific mysteries and principles, leavened with tongue-in-cheek humor and an abundance of illustrations. Chapters are short, but give an understanding of technology and science not available elsewhere. Questions include:

• What holds a satellite up while it goes around the Earth?

• Why is the sky (made out of clear air!) blue instead of green, or just black as night like the sky that high altitude jumper Felix Baumgartner saw?

• How is laser light different from “normal” light?

• Did Columbus really discover that the Earth is round?
• Which one invention will assuredly survive our civilization?

• Why can’t you travel back in time?

If you often feel embarrassed because you don’t have a clue about lasers, the difference between volts, amps and watts, or how jet planes really work – but you would like to understand the physical principles of our modern world, whether you’re a teen or a parent –this book is for you!