Learning about sound doesn't have to be scary. Join mummies as they uncover the science of sound waves and how we make and hear sounds. You'll give your knowledge of sound a boost with a monster dose of humour.
Cristian Mallea worked as an assistant for Lucho Olivera and Horacio Lalia doing comic books and as an illustrator doing work for esoteric publishing houses. Now, Cristian works in the studio founded with partners of La Productora, doing comic books and illustrations for many countries. Anthony Wacholtz has been a baseball fan since he was old enough to pick up a bat and ball. He earned a degree in English from Minnesota State University, Mankato, and has written a biography for young readers of All-Star catcher Joe Mauer. Besides playing softball and following his favorite team, the Minnesota Twins, he enjoys pitting his baseball knowledge against others in fantasy baseball.