Harris, Susan

An account of the operation, usefulness, and history of helicopters.

Describes twelve animals with strange appearance and unusual behavior.

Describes creatures that spend some or all of their time in the upside-down position, including sloths, bats, and flying lemurs.

Describes in simple language the characteristics and uses of minerals and gems.

Briefly discusses marsupials, a group of animals living mainly in Australia, that have pouches in which they carry their young.