The EU adopted a definition of a nanomaterial in 2011 ( Recommendation on the definition of a nanomaterial (2011/696/EU)). Its provisions include a requirement for review " in the light of experience and of scientific and technological developments. The review should particularly focus on whether the number size distribution threshold of 50 % should be increased or decreased ". The Commission is expected to conclude the review in 2016, following the consultation of its draft findings with the stakeholders towards the end of 2015 and a public consultation planned to be published in Summer 2016 or shortly after.
Below is just a partial listing of some of the many, many different possible fields of study within science. Many of the fields listed here overlap to some degree with one or more other areas.
Evolution (Evolutionary biology)
High Energy Physics
Condensed matter physics
Solid State physics