|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||5 days ago||45.89||$20.47||You save $25.42|
|Amazon US||18 days ago||26.03||$20.47||You save $5.56|
|Book Depository US||yesterday||22.54||$20.47||You save $2.07|
Michael Keller, an award-winning journalist and writer, has a bachelor of science degree in wildlife ecology from the University of Florida and a master's degree from the Columbia University Graduate School of Journalism. Nicholle Rager Fuller is a professional illustrator, with a bachelor of arts degree in biochemistry from Lewis and Clark College and a graduate certificate in science illustration from the University of California-Santa Cruz. She lives in Washington, DC, with her husband.