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The story of Winnie, the real Canadian bear that captured the heart of Christopher, son of A.A.

Once people encounter the natural world and become aware of its intricacy, fragility, beauty, and significance, they will recognize the need for conservation.

Einstein's own explanation of his theory for those who do not have a mathematical background and are unfamiliar with physics.

This concise volume contains two addresses by Dr. Einstein outlining aspects of the theories.