What is the world's tallest waterfall? How do dams help generate water power? What happens when a waterwheel spins? This series explores the causes and effects that shape our world. From the underwate
"Our bodies are always active - from before we are born until the day we die. Even when we're asleep our hearts continue to beat, we keep on breathing, and the cells that make up our bodies are consta
All aboard the Engineering Express! Readers will embark on a scientific exploration of steam power and locomotive engineering in this versatile volume. Along the way they’ll gain insight on American h
