Nick and Marta are both suspicious when their biology teacher, the feared Mrs. Bunny Starch, disappears, and try to uncover the truth despite the police and headmaster's insistence that nothing is wrong.

A thousand years ago, more than 20,000 pandas roamed wild through their native China. But within the last few decades, human have destroyed more than half the pandas' habitat. Humans have also poached them, and polluted and overpopulated the earth - all of which makes the panda vulnerable to extinction. Yet now the giant panda is slowly making a comeback. How? From the Sibert Medal - winning author of Team Moon and Girls Think of Everything comes...

"Go behind the scenes and discover how scientists at three US zoos are helping wild and captive orangutans, black-footed ferrets, and black rhinoceroses."--