Catálogo de publicaciones - revistas

<jats:p> On page <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/cgi/content/short/327/5970/1241">1241</jats:ext-link> of this week's issue of <jats:italic>Science</jats:italic> , geoscientists report evidence that the tropics hosted glaciers more than 100 million years before the supposed global freeze in which Earth froze over from pole to pole more than a half-billion years ago. </jats:p>

<jats:p> <jats:italic>Science</jats:italic> Insider reported this week that the Intergovernmental Panel on Climate Change and its parent organization, the United Nations Environment Programme, will request an independent review of IPCC in the wake of unprecedented criticisms of the panel, among other stories. </jats:p>

<jats:p>Researchers gathered at a meeting last month to probe the impact on modern humans of the cataclysmic eruption of Indonesia's Mount Toba about 74,000 years ago—and to ponder whether modern humans had made it to Asia by the time the volcano blew.</jats:p>

<jats:p> <jats:italic>Science</jats:italic> NOW reported this week that an early polar bear has been discovered in Arctic tundra, an appetite-suppressing hormone called leptin is just as effective as insulin at controlling diabetes in mice, engraved eggs suggest early symbolism, and global warming didn't kill the golden toad, among other stories. </jats:p>

<jats:p>Europe's food safety watchdog on 25 February issued a scientific mass-verdict on more than 400 so-called health claims, the promises that food producers make on their labels and in advertisements, rejecting purported health benefits of a raft of substances.</jats:p>

<jats:p>In a packed house at the final Saturday session of the annual Advances in Genome Biology and Technology meeting, revolutionary new DNA-sequencing technologies using silicon wafers and quantum dots were presented.</jats:p>

<jats:p>Two recent papers offer some of the first side-by-side comparisons of human induced pluripotent stem (iPS) cells and human embryonic stem (hES) cells as they differentiate into various kinds of cells. In both papers, researchers report that iPS cells can form desired cell types, but they do so with less efficiency than hES cells.</jats:p>

<jats:p> An alternative to juvenile bipolar disorder and a reorganization of autism-related disorders are among the controversial changes proposed for the fifth edition <jats:italic /> of psychiatrists' bible, the <jats:italic>Diagnostic and Statistical Manual of Mental Disorders</jats:italic> . </jats:p>

<jats:p>For a generation, researchers have sought clues to our galaxy's origins in the rare stars whose compositions most closely approach the purity of the primeval universe.</jats:p>

<jats:p>At the 17th Conference on Retroviruses and Opportunistic Infections, two groups presented some of the firmest data yet to support the concept of testing everyone for HIV and immediately starting all infected people on treatment.</jats:p>