Describes the building of the Three Gorges Dam on the Yangtze River in China, one of the largest and most expensive engineering projects ever, and discusses the benefits and problems caused by the dam
"How did moldy dishes lead to an important scientific discovery? How do viruses invade a cell? How can you avoid food poisoning? The visually stimulating 'Sci-Hi' books take learning science core curr
Kids learn about plants through more than 300 experiments and projects that use apple seeds, beans, potatoes, herbs -- virtually everything that grows! Whether growing space is as small as a windowsi
