Scientific American Magazine

A legal scholar and long-time student of atomic energy matters examines the new legislation, discussing its major provisions and attempting to forecast how they will work out in practice

Before they crash to earth these stony or metallic objects are exposed to cosmic rays. Helium produced by this bombardment provides a new clue to the planetary catastrophes of the past

The elaborate patterns of behavior that precede mating in some species present a puzzling biological problem. Their function is sought through the classic interplay of theory and experiment

The web of modern ground transportation is only as strong as its bridges. An account of their development, with special reference to two great new bridges and the problem of bridge aerodynamics

How do cells manufacture the molecules that neutralize foreign substances? The answer is not known, but the author discusses an hypothesis that accounts for some curious new observations

Just 100 years ago the young Bernhard Riemann gave his famed paper on the foundations of geometry. He discussed space of four or more dimensions, and paved the way for the General Theory of Relativity

In the U. S. it causes 20,000 deaths a year, 10 times as many as those due to poliomyelitis. Its psychological and social factors are studied in the hope it can be prevented

The seaborne commerce of Rome was unsurpassed until relatively recent times. Evidence for this marine traffic comes from many sources, including the newly stimulated underwater archaeology