I have been involved with major reviews of both approaches and will give my take on both. (dotearth.blogs.nytimes.com)
Sadly, on most major review sites it's simply not feasible to give a book more than five stars. (goodereader.com)
The move comes as the mission concept — which has been under development since 2011 — passed its first major review and progresses officially into the next mission phase, formulation. (aaas.org)