Catálogo de publicaciones - revistas

<jats:title>Crossing the boundaries in global sustainability</jats:title> <jats:p> The planetary boundary (PB) concept, introduced in 2009, aimed to define the environmental limits within which humanity can safely operate. This approach has proved influential in global sustainability policy development. Steffen <jats:italic>et al.</jats:italic> provide an updated and extended analysis of the PB framework. Of the original nine proposed boundaries, they identify three (including climate change) that might push the Earth system into a new state if crossed and that also have a pervasive influence on the remaining boundaries. They also develop the PB framework so that it can be applied usefully in a regional context. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.1259855">10.1126/science.1259855</jats:related-article> </jats:p>

<jats:title>Changing tastes in marine microbe food webs</jats:title> <jats:p> Protists are single-celled organisms complete with nuclei, organelles, and symbionts, and possess a multiplicity of physiological talents. They are ubiquitous, abundant, and often neglected by science. Worden <jats:italic>et al.</jats:italic> review the challenges of understanding the role protists play in geochemical cycling in the oceans. These organisms can photosynthesize like plants, graze on bacteria and archaea, parasitize each other and bigger creatures, have sex, and sometimes do all these things serially as conditions change. Their activities may have a significant influence on carbon cycling, and research efforts need to be amplified to understand their functional importance in marine ecosystems. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.1257594">10.1126/science.1257594</jats:related-article> </jats:p>

<jats:p> We are not paying enough attention to the world's soils, a “nearly forgotten resource” and our “silent ally,” 33% of which are in a state of degradation. <jats:xref ref-type="fn">*</jats:xref> We can't breathe, eat, drink, or be healthy without sustainably managing soils. So in recognizing 2015 as the International Year of Soils, the United Nations (UN) is focusing global attention on the increasing pressures on soils and their ripple effect on other global challenges. </jats:p>

<jats:p>A roundup of weekly science policy and related news.</jats:p>

<jats:p>Group opposed to GM foods asks a dozen scientists to hand over letters, e-mails in probe of academic-industry ties.</jats:p>