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Greeks Used Sloping Roof 3000 Years Ago

White Civilization Kills New Guinea Savages

Monopoly on Tornadoes Held by America

Second Babies Younger If They Are Girls

A Prehistoric Tree

The New Sunspot Cycle Sets In

Contagious Health

Bad Weather Helps American Health

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Scientist Transplants Beating Heart into New Body

Astronomical Mist Cleared by Mathematics

Radio Fans Will Engage in Long Conversation