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Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Written for young adults, the Urban Underground series confronts issues that are of great importance to teens, such as friendship, loyalty, drugs, gangs, abuse, urban blight, bullies and self-estee

Drawing on the lives of five great scientists -- Charles Darwin, William Thomson (Lord Kelvin), Linus Pauling, Fred Hoyle and Albert Einstein -- scientist/author Mario Livio shows how even the grea