Recreating Neanderthals...
Can Neanderthals be brought back from the dead?January 22, 2013 [image: 400px-George_Church_at_TED] George Church (credit: Steve Jurvetson/Wikimedia Commons) In a *SPIEGEL* interview, synthetic biology expert and Harvard University professor of genetics George Church explains how DNA will become the building material of the future — one that can help create virus-resistant human beings and possibly bring back lost species like the Neanderthal. In his new book, “*Regenesis: How Synthetic Biology Will Reinvent Nature and Ourselves*,” which he has also encoded as strands of DNA and distr... mais »
turning one form of neuron into another
Researchers turn one form of neuron into another in the brainJanuary 22, 2013 Diagram of a typical motor neuron (credit: Wikimedia Commons) A new finding by Harvard stem cell biologists turns one of the basics of neurobiology on its head — demonstrating that it is possible toturn one type of already differentiated (formed from a stem cell) neuron into another within the brain. The discovery by Paola Arlotta and Caroline Rouaux indicates that “maybe the brain is not as immutable as we always thought, because at least during an early window of time, one can reprogram the identity of on... mais »
hydrocodone abuse
FDA Panel Votes for Tighter Controls on Vicodin By Kristina Fiore, Staff Writer, MedPage Today Published: January 25, 2013 SILVER SPRING, Md. -- An FDA advisory committee voted 19 to 10 on Friday in favor of moving hydrocodone combination drugs such as Vicodin, Lortab, and Norco into the more restrictive schedule II category of controlled substances. The majority of panelists involved in the 2-day hearing believe the evidence suggests that the drugs are pharmacologically similar to and as susceptible to abuse as other opioids, such as oxycodone combination drugs like Percocet, that f... mais »
C. Schwann>>C.Tronco? M. leprae
Bactéria reprogramadora Pesquisadores revelam manobras astutas do bacilo causador da hanseníase para se espalhar pelo corpo do hospedeiro. Em sua coluna de janeiro, Stevens Rehen comenta o estudo, o primeiro a descrever a reprogramação celular a partir de uma infecção natural bacteriana. Por: Stevens Rehen Publicado em 25/01/2013 | Atualizado em 25/01/2013 [image: Bactéria reprogramadora] A bactéria ‘Mycobacterium leprae’ é causadora da hanseníase, doença que acarreta lesão neurológica caracterizada por perda sensorial e motora nos pacientes afetados. (imagem: Wikimedia Commons) Diver... mais »
ochas no BR: 3,8 bilhões de anos
Rochas de bilhões de anos Leitor da CH pergunta: "Quais são as formações geológicas mais antigas do Brasil? Como é feita a datação?" Elton Dantas, do Instituto de Geociências da Universidade de Brasília, responde. Por: Elton Dantas Publicado em 15/01/2013 | Atualizado em 22/01/2013 [image: Rochas de bilhões de anos] As rochas mais antigas do Brasil estão na região de Serra Caiada, no Rio Grande do Norte, e foram datadas com 3,5 bilhões de anos. (imagem: Google Earth) *Pergunta enviada por Gerson Santos Valadares, por correio eletrônico.* As rochas mais antigas do nosso país, e também d... mais »
DNA drive
DNA drive? Pesquisadores inserem arquivos de foto, áudio e texto em uma molécula de DNA. Apesar de promissora, a tecnologia ainda é cara e deve ser usada para conservar informações de alto valor como dados do governo. Por: Mariana Rocha Publicado em 24/01/2013 | Atualizado em 24/01/2013 [image: DNA drive?] O armazenamento de informações no DNA, embora ainda não seja viável economicamente, apresenta uma série de vantagens. Entre elas a capacidade de preservar arquivos por milhares de anos, em condições simples de manutenção. (foto: EBI)/.../
13,7 bilhões de anos em 18 minutos
* * *Do Big-Bang à INTERNET* Por Marcelo Ribeiro em 25.01.2013 as 15:43 Já explicamos em detalhes cada um destes eventos da linha do tempo do universo. Mas esta fabulosa palestra do TED recapitula de maneira eloquente como o universo cria complexidade falando sobre toda a sua história desde 13,7 bilhões de anos atrás.Como o universo veio a existir? Por que funciona desta maneira? Por que nos encontramos neste pequeno planeta cheio de vida? Se você quiser saber mais sobre a humanidade deve perguntar sobre todo o universo. Munido com belas ilustrações David Christian narra toda a histó... mais »
GENDER GAP 2012
*GENDER GAP 2012* *Full Report* The Global Gender Gap Index 2012 RICARDO HAUSMANN, Harvard University LAURA D. TYSON, University of California, Berkeley YASMINA BEKHOUCHE, World Economic Forum SAADIA ZAHIDI, World Economic Forum
US: 50-Year Trends in Smoking
50-Year Trends in Smoking-Related Mortality in the United States Michael J. Thun, M.D., Brian D. Carter, M.P.H., Diane Feskanich, Sc.D., Neal D. Freedman, Ph.D., M.P.H., Ross Prentice, Ph.D., Alan D. Lopez, Ph.D., Patricia Hartge, Sc.D., and Susan M. Gapstur, Ph.D., M.P.H. N Engl J Med 2013; 368:351-364January 24, 2013DOI: 10.1056/NEJMsa1211127 AbstractArticleReferencesCiting Articles (1) The disease risks from cigarette smoking increased over most of the 20th century in the United States as successive generations of first male and then female smokers began smoking at progressively ea... mais »
SIAC
Sociedad Interamericana de Cardiologia Top 10" de las publicaciones del año 2012 En este apartado, nuestro editor selecciona los 10 artículos que tuvieron mayor repercusión de accesos en nuestro sitio. No deje de ver esta espectacular síntesis de lo acontecido !
Collection of archaic medical terms
*List of Heart & Stroke Related Causes of Death* *Recommended by the AMICOR Maria Inês Reinert Azambuja* *The Genealogist's Resource for Interpreting Causes of Death.* *Antiquus Morbus is a collection of archaic medical terms and their old and modern definitions. The primary focus of this web site is to help decipher the Causes of Death found on Mortality Lists, Certificates of Death and Church Death Records from the 19th century and earlier. This web site will be updated often and as new information is received. My intention is to collect and record old medical terms in all Europe... mais »
Cigarette Smoking
New Evidence That Cigarette Smoking Remains the Most Important Health Hazard Steven A. Schroeder, M.D. N Engl J Med 2013; 368:389-390January 24, 2013DOI: 10.1056/NEJMe1213751 ArticleReferences Everyone knows cigarette smoking is bad for you. Most people in the United States assume that smoking is on its way out. But the grim reality is that smoking still exerts an enormous toll on the health of Americans, as documented in two articles in this issue of the *Journal*.1,2 Both articles review mortality trends over time for men and women according to smoking status, and both confirm that ...mais »
super-bug
The Future of Antibiotics and Resistance Brad Spellberg, M.D., John G. Bartlett, M.D., and David N. Gilbert, M.D. N Engl J Med 2013; 368:299-302January 24, 2013DOI: 10.1056/NEJMp1215093 ArticleReferences Audio Interview [image: Interview with Dr. Robert Moellering on the evolution of antibiotic resistance and strategies for combating it.] Interview with Dr. Robert Moellering on the evolution of antibiotic resistance and strategies for combating it. (20:22) - Listen - Download In its recent annual report on global risks, the World Economic Forum (WEF) concluded that “arguably th... mais »
Overcrowding?
Overcrowding? Nah — the World’s Population May Actually Be Declining By Rebecca NelsonJan. 11, 201370 Comments [image: AF5985-001]arents are restricted to havi. The number of people on the planet has grown exponentially in the past half-century alone, from 2.5 billion in 1950 to an estimated 7 billion in 2012, according to the U.S. Census Bureau. The world’s 7 billionth person, born sometime last March, elicited concern that we would run out of food and resources for everyone. An ever updating Census Bureau population clock shows the numbers rising./.../
they're ruling the world.
Women rule: 18 female leaders worldwide (PHOTOS) Not so long ago, women didn't have the right to vote. Now, they're ruling the world. Photo 1 of 18 <> [image: Park geun hye south korea 2012 12 19] South Korean President-elect Park Geun-Hye, of the ruling Saenuri Party, waves to supporters after she is declared the winner of the presidential elections on Dec. 19, 2012 in Seoul, South Korea. Park, daughter of former president Park Chung-Hee, becomes the first female president of South Korea. - [Lee Young-Ho-pool/AFP/Getty Images] - [image: Park geun hye south korea 2012 12 19] - ... mais »
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