Abstract: Organic pollutants can spread further through horizontal or downward infiltration, carried by flowing water, and thereby contaminate more areas. The movement of water within the soil is ...

How linear, rotary, reciprocating and oscillating motion are evolving as customization grows and new capabilities emerge.

Caterpillar redesigned its top-selling motor grader this year, and we take a look at the many features and options for the ...

Tucson-area optics firm Geost has been supplying sensor systems for U.S. defense and intelligence satellites since its founding by a University of Arizona optics Ph.D. two decades ago. Now, Geost is ...