We would like to start the year with some thoughts on some of the recent news appeared in Nanowiki 2009. In this occasion we would like to focus on probably one of the major impact areas of nanotechnology nowadays, that is, to solve the question of its preasumed potential uses in medicine versus its unknown potential in human health and environment risks. This new thing, does it heal or does it kill? Ultimately, both, the toxicity and the medical applications will emerge from the interaction dynamics between inorganic and organic matter at the nanometric (molecular) scale. The responsible implementation of Nanotechnology will result as a balance between the risks and benefits to society analyzed by a broad spectrum of stakeholders. Our intention is to promote the debate on the evolution of this young discipline, nanotechnology, for its safe and responsible development. In parallel, we would like to approach Nature to society through Science and Nanotechnology. nanowiki.info ebook 2009 http://nanowiki.info