There has been some discussion as to whether one made of "killed" viruses can be as effective as one made of live viruses. A brief account of the matter by an investigator of killed-virus vaccine
T2 is a virus which dissolves bacteria. Normally its attack is followed by the appearance of a generation of new viruses.But sometimes the Viruses appear to be missing. Why?
This eel-like creature fastens itself to fish and sucks their blood. Within the past 25 years it has invaded Lake Huron and Lake Michigan and destroyed their teeming population of trout
Geologists debate whether it was formed by (1) crystallization from a melt or (2) alteration of other rocks. An account of experiments on the problem which imitate conditions in the interior of the earth
What selects the plants in an extreme environment? Is it a sort of war? The study of plants in the desert and in the laboratory indicates otherwise, which points a moral for the human species
If an American addresses a Latin from a distance of 20 inches, is he impolite? If an Arab arrives for a 2:30 appointment at 2:45, is he late? All about the customs that unconsciously shape our relations
The progress of European nations in developing atomic power for peaceful Purposes, President Eisenhower's "atomic pool" proposal and other recent events presage a new period in the Atomic Age