It is impossible to determine if countries are doing what they agreed to do under the terms of the treaty.

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But without a final lease agreement it is impossible to determine what the precise increase in revenue and value will be for the Falcons.

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And they sought to block scientists whose research led them to conclude that it is impossible to determine what role if any human activity has had in determining global temperatures from publishing their findings in peer-reviewed scientific journals.

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Plaintiff attorneys counter that bankruptcy trusts usually pay a small fraction of what their clients could win in a lawsuit and that it is almost impossible to determine exactly how a worker was exposed to asbestos.

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With roughly 400, 000 software patents presently in force, it is impossible for entrepreneurs to determine upfront whether they might infringe one.

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This may be very significant if it is difficult, if not impossible, to determine status based on other facts.

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It is always impossible to predict the way conditions will determine the likely course of events here.

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It could also be through something impossible to determine today because the concept is so new and untested.

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