Vincent Schaefer, one of the General Electric scientists who worked on Project Cirrus in the 1940s, makes snow in the lab using dry ice.
October 21, 2013 Dry ice has popped out of bottles, dropped into hurricanes and slithered across many a haunted house floor. As we know after recent events, when sealed in a container, it can create an impressive airport hullabaloo. Here's a short history of the chemical character, at once troubled and sublime.
Dr. Sawen's Magic Nervine Pills contained calcium, iron, copper and potassium. Despite advertising claiming they were free of lead and mercury, both elements were found in the pills.
Courtesy of Mark Benvenuto
April 10, 2013 Researchers put some old elixirs and pills in the Henry Ford Museum's large collection of patent medicines to a modern test. They found a mix of potentially harmful metals like lead and mercury along with benign ingredients, including calcium and iron.
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