Scientific American Magazine

It is fairly common, yet it occurs in few concentrations that can profitably be mined. A brief summary of the most important deposits, including some that have only recently been revealed

Concerning the remarkable discovery that visible radiation is able to resuscitate microogranisms that have apparently been killed by ultraviolet

By sending special balloons to great altitudes physicists have learned that primary cosmic rays are not only the nuclei of hydrogen but also those of more massive atoms

The very small microorganisms that grow only in cells are studied not only for the treatment and prevention of the infections they cause but also for themselves

The wave structure of music is made visible for the classroom

Invented a century ago and widely applied in recent years, the device that utilizes the temperature of the ground or the air to heat and cool houses is still evolving

In which 10,000 dreams are statistically investigated with respect to setting, cast of characters, plot, emotions and coloring

An account of the discovery and exploration of the two-mile crater on the barrens near Hudson Bay. If it is conclusively shown to be meteoritic, it is the largest yet found on earth