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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
- About Us
Engine of Progress
18 March 1998 7:30 pm
German engineer Rudolf Diesel, the inventor known for his durable engine, was born on this day in 1853. When he was 40, Diesel published ideas for an engine that he believed would be more efficient than either steam or gasoline engines. He was manufacturing his namesake by 1899.
Diesel's machine relies on internal combustion, but lacks a carburetor to premix air and fuel and spark plugs to ignite the mixture. Instead, air in the cylinder is compressed to high pressure and temperature, and injected fuel ignites spontaneously. By the 1920s, the popular diesel engine had reached the United States, and by the 1950s, a large proportion of the world's ships and trains were diesel driven, with trucks, tractors, and buses following close behind.
[Source: Roy Porter, Ed., The Biographical Dictionary of Scientists (Oxford University Press, ed. 2, 1994).]