De Domenico, Manlio http://orcid.org/0000-0001-5158-8594
Granell, Clara
Porter, Mason A.
Arenas, Alex http://orcid.org/0000-0003-0937-0334
Article History
Received: 6 April 2016
Accepted: 22 July 2016
First Online: 22 August 2016
Change Date: 23 February 2018
Change Type: Correction
Change Details: In the version of this Progress Article originally published, the left and right panels of Fig. 3, clarifying the details indicated within the centre panel, were mistakenly interchanged. This has now been corrected in all versions of the Progress Article.
Competing interests
: The authors declare no competing financial interests.