Feature

Carnegie Scientists Inspect Maya Ruins

Possible 1932 Flu Epidemic Indicated by Ten-Year Survey

Earth’s Core Was the Child of Two Great Flaming Suns

Government to Check Vitamin Food Claims

Relativity Passes Three Tests Declared Crucial by Einstein

Front Matter

Women Remember Pleasant Events; Men Unpleasant

To Study the Mayas by Living with Them

In Science Fields

Eros: Asteroid 433: “A Classic of Science”

Congress May Pass Infant Welfare Bills

The Theory of the Gene: “A Classic of Science”