Low-mercury and mercury-free methods are available, but socio-economic factors often act as barriers to miners adopting these alternative ways to extract gold, the authors add.
Regarding Napster's claim that its users were not infringing copyright because sharing copyrighted musical compositions and sound recordings via the Napster service is protected by the "fair use" doctrine, the court held that the four fair use factors in the Copyright Act tip the balance in the record companies' favour.
And some proteins act as transcription factors, regulating the output of the genes themselves.
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"There is evidence that certain hormones, or growth factors such as insulin, act to stimulate cancer cell growth, " he says.
They are among the freaky factors that make people uncomfortable with mobile applications that act like they know you better than your closest human knows you.
More specifically, the report highlights the need to make breast cancer research more interdisciplinary, to conduct more research into chemical and physical environmental factors, and to improve the Toxic Substances Control Act (TSCA).
Therefore, while social networking environments can provide greater context that may increase the chances of serendipity, how you act on that information still depends on factors that you only have an instinctive feeling for.
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Under the Childcare Act 2006, a number of different factors - including the quality and capacity of local childcare providers, the local labour market and the council's own resources - are taken into account when assessing whether "sufficient childcare" is being provided in a local authority area.
On employer dropping under the Affordable Care Act, CBO did a very careful analysis of the many factors involved.
It is a delicate balancing act which does not always work - often because of other factors such as staff shortages, he added.
While the intellectual arguments for donating money to the highest-impact solutions are compelling, the reality is that giving is a very personal act, and people and organizations make funding decisions based on many factors.
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This indicates that the factors that restrain dynamism in non-oil segments of the Angolan economy, also act as constraints on the very survival of the urban poor.
To be sure, in opposing the Missile Defense Act of 1999, the Clinton-Gore Administration made the argument that other factors, like those enumerated above, should be taken into account.
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