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Waste and┬áwetlands┬áThe heavily populated area to the east of Toronto has built a sewage system that is both fit for purpose and respectful of the residents and the natural scenery of Ontario, as John OÔÇÖHanlon discovers. The Greater Toronto Area has been growing massively since the 1960s and now has a population of 5.5 million, almost half of them born outside of Canada. And in turn, half of these immigrants have come to Canada in the last 15 years.

David Lengacher explains the value of simulation to business leaders in determining the outcome of emergent behavior from tiny interactions of multiple ÔÇ£agentsÔÇØ in complex processes. In last monthÔÇÖs issue, I talked about the value that simulation can provide to managers who are responsible for overseeing operations of complex processes.

People over profitsJohn Garamendi, Lieutenant Governor of California, believes health insurance is a racket overdue for reform. But, as he tells Martin Ashcroft, he might have to become Governor to achieve his ambition. The healthcare system in the United States is a national scandal.

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Debswana, a diamond mining operation owned jointly by the government of Botswana and De Beers, has announced mine closures as a result of falling demand.

Debswana has four diamond mines, all of which will close tomorrow, 25 February. Two are scheduled to reopen  on 14 April, but the other two will remain closed for the rest of the year.

The 580 employees affected by the closure of the Damtshaa mine and Opara No. 2 Plant will be redeployed within the company or offered voluntary early retirement and other incentives.

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