The Reading Warehouse

Every year in Namibia, about two thousand zebras suddenly disappear from their grazing area along the Chobe River. Months later, the herd returns. Where do they go? And why? Thanks to satellite-tracking collars, scientists were able to solve the mystery, but several questions remain. Award-winning science author Sandra Markle reveals the process scientists used to study the zebras, and she also delves into the science of migration, exploring how animals know where to go, how to get there, and when to leave.

Sandra Markle is the author of numerous award-winning books for children. A former elementary science teacher, she is a nationally-known science education consultant.

Markle has received many honors for her series Animal Predators, Animal Scavengers, and Animal Prey. Several titles have been named as National Science Teachers Association (NSTA)/Children's Book Council (CBC) Outstanding Science Trade Books for Students K-12, and Animal Predators was honored as a Top 10 Youth Nonfiction Series by Booklist.

Markle is also the author of the Insect World series and several single titles. Her book Rescues! was named a Best Book by the Society of School Librarians International and a Recommended Title of Outstanding Nonfiction by the National Council of Teachers of English's (NCTE) Orbis Pictus Award committee; Animal Heroes was named a 2008 Lasting Connections title by Book Links.

Markle lives in Lakewood Ranch, Florida with her husband, photographer Skip Jeffery.