Animals Up and DownIntroduces the opposites up and down by comparing the behavior of such animals as eagles up in the air and fish down in the sea.

Part of the Enduring Mysteries series

Neptune is a planet like no other

A simple introduction to the Roman warriors known as gladiators

ISBN 9781583419908

Celebrations of the natural world weave through this haunting story of an incalculable loss—and about the healing power of the long-delayed return of summer fun

ISBN 978-1-60818-736-2

” an all-black regiment that joined the Great War in its final year

–Publishers Weekly

ISBN 978-1-60818-925-0

and so much more

then is repaid for his good deeds when he is in need of help

Part of the Protectores federales series