Human Body Detectives Merrin and Pearl are at it again. Their magical ability to jump into people's bodies and explore their systems (digestive, skeletal, nervous ( June 2014), circulatory, and immune) combines science with their fun adventures to help kids understand their anatomy and how their bodies work. In Osteoblasts to the Rescue, Merrin and Pearl examine their friend Lily's skeletal system on their journey to reach the broken bone in her arm. Along the way they slide down rib bones, climb up the clavicle, see the fracture, and so much more. In the end they not learn about how broken...

Human Body Detectives Merrin and Pearl are at it again. Their magical ability to jump into people's bodies and explore their systems (digestive, skeletal, nervous, circulatory, and immune) combines science with their fun adventures to help kids understand their anatomy and how their bodies work. In Brainiacs, Merrin and Pearl venture in to the nervous system when their favorite teacher, Ms. Anderson, spills hot tea on her leg. On the way to her brain to examine how she'll react, Merrin and Pearl ride a nerve impulse, bounce among dendrites, explore the brain's gray matter, and so much more....