Uncategorized

From the May 20, 1933, issue

LARGEST X-RAY TUBE BEGINS TO BATTLE AGAINST CANCER The mightiest weapon yet to enter the war against cancer was put in operation at the Mercy Hospital Institute of Radiation Therapy of Chicago. It is a new, 800,000-volt X-ray tube that, operating on a current of 1/100 of an ampere, is estimated to emit radiation equal […]

Amphibian Atlas

Looking for a Montana tailed frog outside Montana or wondering in which state you might find a desert slender salamander? The U.S. Geological Survey has a Web site that identifies the places where different types of amphibians dwell across the United States. Click on any one of the 280 or so species of amphibians currently […]

Repeat After Me

New research suggests that the ability to infer the thoughts and feelings of others grows out of a capacity for imitation exhibited by human infants and perhaps by other animals, as well.