Paul Jozef Crutzen (b 1933)

a Dutch, Nobel Prize-winning, atmospheric chemist.

•  1995: Nobel Prize in Chemistry (with Dr. M. Molina and Dr. F. S. Rowland, U.S.A.)

In 2000, in IGBP Newsletter 41, Crutzen and Eugene F. Stoermer, to emphasize the central role of mankind in geology and ecology, proposed using the term anthropocene for the current geological epoch. In regard to its start, they said:

To assign a more specific date to the onset of the "anthropocene" seems somewhat arbitrary, but we propose the latter part of the 18th century, although we are aware that alternative proposals can be made (some may even want to include the entire holocene). However, we choose this date because, during the past two centuries, the global effects of human activities have become clearly noticeable. This is the period when data retrieved from glacial ice cores show the beginning of a growth in the atmospheric concentrations of several "greenhouse gases", in particular CO₂ and CH₄. Such a starting date also coincides with James Watt's invention of the steam engine in 1784. 

                                                                              https://en.wikipedia.org/wiki/Paul_J._Crutzen

http://e360.yale.edu/feature/living_in_the_anthropocene_toward_a_new_global_ethos/2363/

https://www.pik-potsdam.de/news/public-events/archiv/alter-net/former-ss/2007/05-09.2007/steffen/literature/ambi-36-08-06_614_621.pdf

http://www.casinapioiv.va/content/dam/accademia/pdf/acta18/acta18-crutzen.pdf

http://www.environmentandsociety.org/exhibitions/anthropocene/huge-variety-possibilities-interview-nobel-laureate-paul-crutzen-his-life

http://downtoearth.danone.com/2013/01/09/paul-jozef-crutzen-the-age-of-the-anthropocene/