Abstract: The present invention provides a method of generating computer executable code using components, each of which corresponds to a respective data manipulation service, typically implemented by a respective entity. The method includes defining a combination of components corresponding to a sequence of data manipulations. The data manipulations are then performed, which can be achieved by requesting the provision of each service from the respective entities in accordance with the defined component combination, thereby causing computer executable code to be generated.

Abstract: Apparatus for cooling, the apparatus including a solar tower having a collector extending radially outwardly from a base of a chimney, the collector being for heating air at least in part using solar radiation to thereby induce air flow radially inwardly from a perimeter of the collector and up the chimney and at least one cooling air pipe, the cooling air pipe extending at least partially along a length of the chimney to allow cool air to be drawn through the pipe at least partially using the air flow, the cool air being used to provide cooling.