Find out how your brain, bones, muscles, and other body parts have developed and changed as you've grown bigger and older.

An introduction to wind power with wind turbines. Includes illustrations, photographs, and a glossary.

Presents the concept of time through simple text and photographs.

Introduces twelve insects whose life cycles take weird to a whole new level, from wasps that turn spiders into zombies to help them take care of their larvae to bot flies that start life by burrowing into a horse's tongue.

"Green-Collar Careers" is a fascinating new series that focuses on 'green' careers. The scope of the fields is broad and detailed, showing all kinds of rewarding and interesting jobs that address issues of conservation and environmentalism. Each title in the series features: mind-portraits of people working in careers; a special section to help readers explore their own interest in, and aptitude for, each field; and, further information, additional...

Step-by-step instructions for origami Valentine's Day crafts.

Provides step-by-step instructions for simple Valentine's Day craft projects made with basic craft supplies or recycled materials from around the house, including such options as heart paper chains, woven heart, and fabric scrap hearts.

Introduces different kinds of sharks, including the great white, the hammerhead, and the tiger.