Catálogo de publicaciones - revistas

<jats:title>The promise of cellulose</jats:title> <jats:p> Cellulosic bioenergy, obtained from the lignocellulose that makes up nearly half of plant biomass, has considerable potential as an environmentally friendly energy source, but it still requires substantial resources to produce. Robertson <jats:italic>et al.</jats:italic> review the trade-offs between the use of cellulosic biofuels and climate mitigation, biodiversity, reactive nitrogen loss, and water use to direct more effective policies for their production. Growing native species on unfarmed land is a promising way forward. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6345" page="eaal2324" related-article-type="in-this-issue" vol="356" xlink:href="10.1126/science.aal2324">eaal2324</jats:related-article> </jats:p>

<jats:title>Strong under pressure</jats:title> <jats:p> Human cytomegalovirus (HCMV) is a member of the herpesvirus family that can cause life-threatening infections in those who are immunocompromised. HCMV encodes a genome that is about 50% larger than that of herpes simplex virus 1 (the virus that causes cold sores), but these two viruses have similar-sized capsids. Yu <jats:italic>et al.</jats:italic> used cryo–electron microscopy to determine the structure of the HCMV capsid to 3.9-Å resolution. This is the first high-resolution capsid structure from the herpesvirus family. It reveals extensive interactions that stabilize the capsid to withstand the high pressure that comes from accommodating such a large genome. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6345" page="eaam6892" related-article-type="in-this-issue" vol="356" xlink:href="10.1126/science.aam6892">eaam6892</jats:related-article> </jats:p>

<jats:title>Separating charges is a gas</jats:title> <jats:p> Solid and liquid electrolytes allow for charges or ions to move while keeping anodes and cathodes separate. Separation prevents short circuits from occurring in energy storage devices. Rustomji <jats:italic>et al.</jats:italic> show that separation can also be achieved by using fluorinated hydrocarbons that are liquefied under pressure. The electrolytes show excellent stability in both batteries and capacitors, particularly at low temperatures. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6345" page="eaal4263" related-article-type="in-this-issue" vol="356" xlink:href="10.1126/science.aal4263">eaal4263</jats:related-article> </jats:p>

<jats:p>With the arrival of the 115th U.S. Congress, the House of Representatives began hearings on the Nuclear Waste Policy Amendments Act of 2017. The legislation restarts Yucca Mountain as a repository for highly radioactive waste. In 1987, Congress amended the Nuclear Waste Policy Act of 1982, selecting Yucca Mountain, Nevada, as the only site to be studied, expecting the repository to open in 1998. It did not. Over the past 30 years, not much has changed. But going forward—or not—with Yucca Mountain will not address the systemic problems of the U.S. nuclear waste program, and this may well lead to continued failure.</jats:p>

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