A clinical report in the current edition of Deutsches Ärzteblatt International supports the belief that the designer drug “Spice Gold” is strongly addictive.   Ulrich S. Zimmermann from Dresden Technical University and colleagues describe a young man who developed physical withdrawal symptoms after regular consumption, accompanied by a dependence syndrome.

Since January 2009, “Spice Gold” has been subject to the German Narcotics Law, meaning that production, free trade and possession are forbidden, but initially only for a year. There could be a permanent regulation at the end of that time and more information about “Spice Gold” is currently being collected.

A team of astrophysicists say they have solved a mystery that led some scientists to speculate that the distribution of certain gamma rays in our Milky Way galaxy was evidence for undetectable 'dark matter' making up much of the mass of the universe.

In two papers, the astrophysicists instead say that this distribution of gamma rays can be explained by the way "antimatter positrons" from the radioactive decay of elements, created by massive star explosions in the galaxy, propagate through the galaxy. Thus, they say, the observed distribution of gamma rays is not evidence for dark matter.

Johann Galle fans won't like reading this but professor David Jamieson, Head of the School of Physics at the University of Melbourne, says Galileo beat him to the punch in the discovery of Neptune - by 234 years.

If correct, the discovery would be the first new planet identified by humanity since deep antiquity.

Medical doctors often like to characterize themselves as scientists, and many others in the public are happy to join them in this.

I submit, however, that such a characterization is an error.

It is not a slur on the profession or its practitioners to say this, particularly once one understands that science is not the only, or only worthy, or even the most prominent form of reasoned inquiry that people can and do engage in. Furthermore, it is not a slur to say something that is simply true.

The NY Times recently criticized cancer funding policies as being too risk-averse.

The Director of the National Cancer Institute has responded, but his response helps prove the point that funding is too risk averse:

A gene called Chd1 has been identified in a Nature study as crucial for embryonic stem cell pluripotency - the ability to differentiate into any type of cell.  Chd1 seems to act by keeping the genetic material open and there poised to express any gene. Chd1 is also shown to be fundamental when reactivating differentiated tissue cells in order to create new stem cells.

The discovery has implications, not only for a better understanding of stem cells unique characteristics, but also for the process of obtaining them from tissue-specific cells avoiding all the problems associated with embryonic stem cells.

Twitter, the newest social networking sensation, can generate sales leads for your business faster than other social network, even with a slashed budget, says David White, Founder and Chief Executive of Weboptimiser and he says he can tell you how your company can benefit from it when he presents his webinars in July.   He says Twitter is generating up to half the hits on his company’s website.

The Arxiv is an online repository of scientific papers in physics, astronomy, maths, cosmology, computer science, and a few other topics, where papers due to be published on scientific journals are submitted by the authors, and become quickly accessible for free to anybody before the peer-review process ran by the journals is over and they get printed there.

This is my course assignment of Evolutionary Ecology of Stockholm University,Sweden in the year of 2009.

Abstract

Specialization character of phytophagous insects is one of the key examples of insect-plant relationship. Host specificity of insect is required for their larval development. Several factors like trade-off, characteristics of host plant, insect’s neural system are responsible to an insect for becoming a specialist. Though specialization character of phytophagy increase the vulnerability towards extinction, still insect tense to be specialist for protecting themselves from natural enemies, getting the microclimate facility and boost up the survival rate of their offspring.

Scientists have discovered the gene behind Recessive Omodysplasia, a rare skeletal disease characterised by short-limbed dwarfism and craniofacial anomalies. The work, just published in the American Journal of Human Genetics, reports the identification on chromosome 13 of a gene - GPC6 – that is shown to be crucial for normal bone development.

The research will allow a better comprehension, as well as prevention, of the disease by permitting the screening of potential mutation carriers in pregnancy but most importantly will also help to understand better bone development and its molecular bases.