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<jats:p> In the andean highlands of Peru, a typical single-room home will burn approximately 3.6 tons of wood a year, not just for heating but for cooking indoors. Three billion people world-wide cook indoors over open fires with solid fuels. This use has a detrimental effect on human health. According to the World Health Organization (WHO), nearly two million people die annually from open-fire cooking, with women and young children the most affected. The hazards related to these practices include acute respiratory infections, insufficient weight at birth, and chronic obstructive pulmonary disease. Despite WHO estimates that cookstove smoke is one of the top five threats to public health in poor developing countries, the effects of exposure to it have received limited funding and research attention. The good news is that since the announcement last year of the Global Alliance for Clean Cookstoves [launched by the United Nations (UN) Foundation], coordinated efforts are successfully under way to support the use of clean cookstoves in the developing world. <jats:xref ref-type="fn">*</jats:xref> </jats:p>

<jats:p>In science news around the world this week, a task force has found that a prostate cancer test does more harm than good, the European Space Agency will launch two missions to study the sun and the mysterious dark energy that is speeding the universe's expansion, the U.K. has pledged £20 million to rid the world of guinea worm, the Indian government announced the creation of a research center to battle future food crises, a dictator's new try for a UNESCO award has been rebuffed, a North Korean university is hosting an international science conference, and a backup insecticide has shown promise against malaria.</jats:p>

<jats:p> Follow the links below for a roundup of the week's top stories in science, or <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/content/334/6053/160.1.full.pdf">download a PDF of the entire section</jats:ext-link> . <jats:list list-type="bullet"> <jats:list-item> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/content/334/6053/160.2.summary">Around the World</jats:ext-link> </jats:p> </jats:list-item> <jats:list-item> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/content/334/6053/findings.full">Findings</jats:ext-link> </jats:p> </jats:list-item> <jats:list-item> <jats:p> <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/content/334/6053/161.1.summary">Random Samples</jats:ext-link> </jats:p> </jats:list-item> </jats:list> </jats:p>