The 1st International Conference on the Theory and Practice of Natural Computing (TPNC 2012) invites authors to submit poster presentations. TPNC 2012 will be held in Tarragona (Spain) on 2-4 October, 2012. See http://grammars.grlmc.com/tpnc2012/ Poster presentations are intended to enhance informal interactions with the conference participants, at the same time permitting in-depth discussion. TOPICS We encourage authors to submit presentations that discuss novel work in progress on: - nature-inspired models of computation, - synthesis of nature by means of computation, - nature-inspired materials, - information processing in nature, - applications of natural computing. Posters do not need to present final research results. Work that is being developed and may lead to new interesting ideas is welcome. KEY DATES Submission deadline: August 26, 2012 Notification of poster acceptance or rejection: September 2, 2012 SUBMISSION Please submit an abstract through: https://www.easychair.org/conferences/?conf=tpnc2012 The abstract should contain the title, author(s) and detailed affiliation, and should not exceed 500 words. PRESENTATION Posters will be allocated 10 minutes each in the programme for oral presentation. Moreover, they will remain hanging during the whole conference for discussion. PUBLICATION Posters will not be published in the LNCS proceedings volume of TPNC 2012. However, there will be a specific section in the LNCS proceedings volume of TPNC 2013 reserved for those accepted papers that derive from 2012 posters. REGISTRATION Authors of accepted posters have to register to the conference. Their registration fare, however, will be very reduced: 135 Euro (one third of the early fare for PhD students).