Plastic bags are cheap and easy to use. But what happens when a bag breaks or is no longer needed? In Njau, Gambia, people simply dropped the bags and went on their way. One plastic bag became two. Then ten. Then a hundred.

Describes the sun and each planet of the solar system and introduces concepts such as a day, a year, orbit, and rotation.

"How can you make authentic Spanish food at home? How have Spain's history and geography played a part in the development of its arts and festivals? How are Spanish people embodying the idea of global citizenship? The answers to these questions and many more are found in this updated and comprehensive look at life in Spain. Colorful photographs of Spain's diverse landscapes, cities, and citizens are paired with meticulously researched main text, sidebars,...

Provides comprehensive information on the geography, history, wildlife, governmental structure, economy, cultural diversity, peoples, religion, and culture of Romania.

Discover the causes behind familiar weather patterns, destructive weather phenomena, and explore the dynamic changes the earth and sea undergo as a result.

Provides comprehensive information on the geography, history, wildlife, governmental structure, economy, cultural diversity, peoples, religion, and culture of Poland.

"Travel back 5,000 years to when pharaohs ruled a kingdom on the Nile. From hieroglyphs and pyramids to jeweled treasures and mummies, find out how archaeologists cracked a code and unlocked the history of civilization."--