Renato Fabiano Matheus - Ciência e tecnologia

Ciência e tecnologia
Nature
Nature is a weekly international journal publishing the finest peer-reviewed research in all fields of science and technology on the basis of its originality, importance, interdisciplinary interest, timeliness, accessibility, elegance and surprising conclusions. Nature also provides rapid, authoritative, insightful and arresting news and interpretation of topical and coming trends affecting science, scientists and the wider public.

Making the paperJay Keasling Brewer's yeast joins the fight against malaria. Abstractions First AuthorVega is the second brightest star in the northern hemisphere and is used by astronomers as a benchmark for assessing the brightness and colour of other stars. But on page 896 of this issue, it is Vega itself that gets assessed, with QuantifiedThe Netherlands A numerical perspective on Nature authors.At the University of Utrecht in the Netherlands, Dirk Spengler is writing up his PhD thesis in structural geology. Undertaking the PhD project was an easy decision, he says, as it offered a combination of all the things The constant gardeners While pottering away in a garden near you, botanists are playing an increasingly sophisticated role in studying plant diversity. They should continue to broaden their scientific reach. More than the money Technology-transfer offices are learning from their mistakes. So should the academics that they serve. Neglected neighbour Venus Express will go some way towards correcting a strange disparity. Research highlights Genetic engineering: Blind miceNeuron50, 23â€“33 (2006)One strategy for restoring vision lost to retinal degeneration is to turn surviving nerve cells into light sensors. Could a light-activated protein from green algae do the trick?Zhuo-Hua Pan at the Wayne State University School Bird-flu experts question advice on eating poultry How safe are chicken and eggs? Patients warned about unproven spinal surgery Critics attack Chinese treatment despite anecdotal successes. Sidelines On the recordâ€œWe are Earth scientists. We are not part of a vast conspiracy to perpetrate a hoax, nor are we crowd-following herd animals.â€Oceanographer David Archer of the University of Chicago refutes conservative US columnist Robert Novak's claim that scientists are hyping global Malaria breakthrough raises spectre of drug resistance Yeast engineered to produce potent drug. Two telescopes join hunt for ET Optical astronomers scan the sky for signs of life. Can super-antibody drugs be tamed? As it becomes clear that the London clinical trial disaster was indeed the fault of the drug itself, Michael Hopkin looks at what went wrong, and whether there is any future for â€˜superagonistâ€™ antibody therapies. Japan revises its military plans for space Government wants better spy satellites. News in brief â€˜Nanoâ€™ cleaning product recalled after health scareA German company has mounted what is thought to be the first ever withdrawal of a nanotechnology-based product.Late last month, more than 100 people reported headaches, insomnia and breathing problems after using two versions of a cleaning Plant scienceGardens in full bloom In a world of declining biodiversity, botanical gardens are coming into their own â€” both as storehouses of rare plants and skills, and increasingly as centres of molecular research. Emma Marris reports. SeismologyBreaking new ground In 1906, a great earthquake destroyed San Francisco, and galvanized US seismologists. Naomi Lubick looks back at the event that changed the country's geological scene. University challenge Cambridge is revamping its approach to technology transfer â€” but will it work? Colin Macilwain reports. Industry: policing the â€˜dark sideâ€™ of ecology SirI commend your News Feature â€œCaught between shoresâ€ (Nature440, 144â€“145; 2006), highlighting the rift between academic and corporate ecology. I fully support your callfor a higher standard of ecological science to regulate business activities and defend the Industry: speak up to stop its pressure on academia SirYour News Feature â€œCaught between shoresâ€ (Nature440, 144â€“145; 2006) suggests that scientists in industry sacrifice independence for influence. So do scientists in government. It's a classic insider/outsider dilemma. As a former chief environmental scientist for Australian Mineral Risks of a high-protein diet outweigh the benefits SirAlastair Robertson of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) says that the CSIRO's high-protein Total Wellbeing diet is â€œbased on peer-reviewed science within robust experimental frameworksâ€ (â€œDiet's healthy blend of science and practicalityâ€œ Nature439, 912; 200610.1038/439912c). These Local people may be the best allies in conservation SirWe, like many, have been excited by the discovery of new animal and plant species in West Papua's Foja Mountains. Although we are not against granting the area official protection status, as discussed in your News story â€œCalls to conserve biodiversity hotspotsâ€ (Nature Real concerns, false gods Invoking a wrathful biosphere won't help us deal with the problems of climate change. Climbing Mount Schiehallion The Enlightenment recluse Henry Cavendish is remembered for being eccentric, synthesizing water and determining the Earth's density. Notoriously taciturn, Cavendish apparently made one joke in his entire life: commiserating with the ill-health of his colleague John Michell, he hoped that â€œit may at least permit Thirsty work Nearly a billion people live in the drylands of the developing world. These often isolated mountain and desert communities spend much of their time trapping, channelling and conserving what little water there is. As a result, they are expert in one of today's urgent tasks