Is it safe to descend from cruising altitude to the runway in one smooth glide?

Sydney Morning Herald has recently reported that by 2013, an estimated 100 airports in Europe will allow planes to descend from cruising altitude to the runway in one smooth glide. It is said that this will reduce carbon emissions and save fuel. I live under the fligth path and would like to know if this is any... show more Sydney Morning Herald has recently reported that by 2013, an estimated 100 airports in Europe will allow planes to descend from cruising altitude to the runway in one smooth glide. It is said that this will reduce carbon emissions and save fuel. I live under the fligth path and would like to know if this is any safer than the current practice.
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