Sandra Markle is the author of more than one hundred nonfiction books on science topics for children. She has won numerous awards for this work, including the National Science Teacher Association and Children's Book Council's list of Outstanding Science Trade Books for Children, the International Reading Association's Young Adults Choice Award, the Societyof School Librarians International Book Award for Language Arts K-6, the Parent's Guide to Children's Media Nonfiction Award, The Bank Street College of Education's Best Children's Books of the Year Award, and Nick Jr. magazine's Best Books of the Year Award. A Mother's Journey (Charlesbridge) was the recipient of six awards, including being selected a 2006 Boston Globe-Horn Book Honor Book. Sandra has been named Georgia Author of the Year five times and was honored as one of 1999's Women of the Year by Women in Technology International for her contributions to science and technology.

In addition to her books, Sandra has developed science specials for CNN and PBS. She is also noted for developing two widely acclaimed Internet-based programs for the National Science Foundation: On-Line Expedition: Antarctica, one of the first online educational programs, and Kit & Kaboodle, an Internet-based science education program that has been used by thousands of schools in all fifty states plus eleven countries.

Sandra Markle lives in a house in the country surrounded by wildlife in Amberley, New Zealand.