Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleHow Long Have We Been in the Anthropocene Era?AuthorsPaul J. Crutzen; Will SteffenPublicationClimatic Change, 2003, Vol 61, Issue 3, p251ISSN0165-0009Publication typeArticleDOI10.1023/B:CLIM.0000004708.74871.62