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...introduction to this album What is an ecosystem? How the definition of an ecosystem as "a living system of energy transfer" arose The energy cycle Understanding the role of the sun, carbon, and energy interactions between organisms in ecosystems Humans enter the equation How human activity affects the delicate energy balance in an ecosystem with often adverse consequences...

...introduction to this album. Introduction to Ely and Chartres Cathedral A brief history of these two stunning Cathedrals, looking at their architecture and engineering. Stone John Trapp looks at stone as a building material, especially it's use in building the Parthenon in Greece. The Arch Using models, Professor Francis Evans explains how arches stay standing. John Trapp...

...managers spent a lot of time and effort in finding a suitable source population. Many arguments were taken into account. Prevalence of diseases need to be known and selecting individuals for the translocation cannot negatively influence the source population. One of the guidelines for this is that priority should be given to a source population in close geographic...

...project, at least as seen by the non-technical manager, has something of this character; it is usually innocent and straightforward, but is capable of becoming a monster of missed schedules, blown budgets, and flawed products. So we hear desperate cries for a silver bullet – something to make software costs drop as rapidly as computer hardware costs do. But, as we look...

...introduction to this album. Darwin's controversial reception Prior to publishing his theories, Darwin built up a network of supporters around the world. Nevertheless, his theory of evolution prompted a lot of debate. The cultural context was key to its approval or rejection. Darwinism and politics Darwin's theories were particularly subject to political interpretation:...