What is a black hole? How do we know that stars and galaxies are billions of years old? What is the difference between stars and planets? Glenn Murphy, author o
PREPARE TO LAUGH AND LEARN Scientific answers to mysteries kids really want to know. Sure a lot of kids want to grow up to be astronauts, but according to scien
It's a BIG universe out there, and there's loads of stuff we don't know about it yet. But what we do know is pretty cool! Glenn Murphy, author of Why is Snot Gr
How loud can your average middle-grader burp? Parents, librarians, and innocent bystanders are about to find out. This follow-up to the equally alluring WHY IS
What is a selfish gene? What are the kingdoms of life? Why are there no car-sized bugs and beetles? Glenn Murphy, author of Why is Snot Green?, answers these an