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This article focuses on the role of water control in the emergence and demise of Classic Maya political power (c. C.E. 250-950), one that scholars have long underestimated. The scale of water control correlates with the degree of political power, reflected in three levels of Maya civic-ceremonial centers--regional, secondary, and minor. Such power derives from a complex relationship among center location, seasonal water supply, amount of agricultural land, and settlement density. Maya kings monopolized artificial reservoirs and other water sources during annual drought, providing the means to exact tribute from subjects. Climate change undermined the institution of rulership when existing ceremonies and technology failed to provide sufficient water. The collapse of rulers' power at regional centers in the Terminal Classic (c. C.E. 850-950) had differing impacts on smaller centers. Secondary and minor centers not heavily dependent on water control survived the drought and the collapse of regional centers.

Physicist David Locke Webster (1888-1976) had an unusually long and varied career. He investigated the optical properties of chlorine gas, and in 1915 he made the first x-ray determination of Planck's constant.

David Webster Dole David Webster Dole, age 101, of Bloomington died January 28, 2016 at Friendship Village. David was born October 18, 1914 in Minneapolis the son of George A. and Hugh Ella \"Helen\" (Brock) Dole. He graduated from West High School in Minneapolis in 1932. He was united in marriage to Katherine E. Turner. In 1937 he began working for Henri Hurst & McDonald in Chicago and in 1947 until 1950 worked for C.E. Hooper in New York.

\"We've had a rapid escalation in the overhead costs of AWI and at the same time a very serious reduction in its revenue base. \"Facts are we are buying the champagne, the growers aren't getting a drink and haven't had one for a long time, and they'll continue to walk off into the distant blue sky.\"

The Spra-Coupe 7000 Series introduced a new level of power and capacity to our customers with the 7450 and 7460 Spra-Coupes,\" says David Webster, marketing manager for Spra-Coupe Willmar Products. \"They are able to cover more acres in a single day with these machines.

The previous year's financial figures are non-comparable, because on 1 May 2005, the group sold former divisions DW Projects and DW Lighting Services to ETDE, a subsidiary of Bouygues Construction, giving them sufficient financial backing to compete for PFI work.