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(319 diggs) World's smallest electric motor made from a single molecule Chemists at Tufts University's School of Arts and Sciences have developed the world's first single molecule electric motor, a development that may potentially create a new class of devices that could be used in applications ranging from medicine to engineering.

(170 diggs) The Best New 2011 Diesel Cars New diesel cars today are fuel-efficient and clean-burning, even compared to some efficient gas-powered engines. Take a look at the best 2011 diesel cars on the road.

(3 diggs) GM launches smallest diesel engine in India GM on Monday introduced its smallest diesel car engine anywhere in the world to power its Chevrolet Beat in India as the US-based giant took on rivals in the fast-growing small diesel vehicle market.

(59 diggs) Tiny heat engine may be world's smallest Steam engines, combustion engines, and diesel engines are all different types of heat engines, which operate by converting heat energy into mechanical work. Although heat engines have existed for a long time, reducing their size down to the microscale is very difficult since both their efficiency and power density greatly decrease when their size decreases.

(154 diggs) Honda Motors To Challenge Europe's Car Makers With Advanced Technology for Smaller Diesel Engine Honda Motor Co., Ltd. is looking out for ways to use a smaller diesel engine that will increase the chances to challenge the vehicle manufacturers in Europe.