Sentences with phrase «uncertainty about the environmental impact»

By TARA PATEL Aerospace manufacturers are pressing ahead with their plans to develop the next generation of supersonic jetliners despite renewed uncertainty about the environmental impact of exhaust emissions that could ground the high - speed aircraft.

Of course, this is bad because natural gas is still a fossil fuel that produces greenhouse gases, and the new natural gas discoveries require fracking, which brings a whole other bunch of issues and uncertainties about the environmental impact.

Not exact matches

In this instance, however, the overall weight of the evidence from the cumulative body of information contained in this Public Health Review demonstrates that there are significant uncertainties about the kinds of adverse health outcomes that may be associated with HVHF, the likelihood of the occurrence of adverse health outcomes, and the effectiveness of some of the mitigation measures in reducing or preventing environmental impacts which could adversely affect public health.