(Encyclopedia) carbide, any one of a group of compounds that contain carbon and one other element that is either a metal, boron, or silicon. Generally, a carbide is prepared by heating a metal, metal…
(Encyclopedia) VitebskVitebskvēˈtĕpsk, vēˈtyĭpsk [key], city (1989 pop. 350,000), Belarusian Vitsyebsk, capital of Vitebsk region, N Belarus, on the Western Dvina River. It is a river port and large…
—By Borgna BrunnerOmo Is Oldest In 2003 the dating of an Ethiopian Homo sapiens fossil, “Herto Man,” was hailed as a milestone in paleoanthropology. At 160,000 years old, Herto Man was a full 50…
Going Into the Upper AirWeatherLet's See How It's DoneNow for the Real WorkGoing Into the Upper AirBring on the MachinesWhat About the Five-Day Forecast? The ground-level data nicely shows what's…
Have I Got News for You!Writing WellThe Professional Edge: Writing on the JobHave I Got News for You!Onward and Upward: Resums and Cover Letters “I'd rather write a good-news letter than a bad-news…
(Encyclopedia) automation, automatic operation and control of machinery or processes by devices, such as robots that can make and execute decisions without human intervention. The principal feature…
