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Sciencebase Science Blog
http://www.sciencebase.com/science-blog
Science Blog from Freelance Science Writer David Bradley
Fri, 09 Jan 2009 10:36:32 +0000
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Subscribe with My Yahoo!Subscribe with NewsGatorSubscribe with My AOLSubscribe with BloglinesSubscribe with NetvibesSubscribe with GoogleSubscribe with PageflakesSubscribe with Live.comSubscribe with netomat HubSubscribe with FlurryAdd to Any Feed ReaderWelcome to the Sciencebase Science free subscription page. Choose you newsreader from the buttons on the right to get regular updates from Sciencebase. You can get updates by email too: http://www.sciencebase.com/email Once you've subscribed, drop me a line to get your free ebook - 100 Greatest Scientific Discoveries - feedback[at] sciencebase.com
Scientwists
http://www.sciencebase.com/science-blog/scientwists.html
http://www.sciencebase.com/science-blog/scientwists.html#comments
Thu, 08 Jan 2009 17:20:31 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=3163
Scientwists]]>
 I carried out a little ad hoc experiment in social media this week. Having backed up my twitter friends and followers using Tweetake, I figured it was time to make them earn their keep…I jest. No, seriously, I’d downloaded the lists, which come as CSV files you can open in a spreadsheet program, and just for fun I thought I’d sort them into groups, picking science-related tweeps as the first category. By, pure chance, there were 100 scientwists in that list.Next, step was to cut and paste this list into my blog software and activate the web addresses for these 100 scientific tweeters. I then, of course, posted a tweet to let everyone know I’d compiled a list of twitter users with a scientific bent. Several people retweeted my tweet and I started to get some nice responses, direct messages, blog comments, and emails. Some of these came from twitter friends who had been inadvertently left off the list, so I added them and also activated their twitter name in the list, making it linkable to their twitter profile.That move then formed the basis of a nice trade - you retweet or comment on the list and I’ll add you if you’re aren’t already on it and if you are I’d activate your twitter name and so it grows. I’ve not counted how many times it has now been mentioned, suffice to say that my local twitterhood continues to grow. Moreover, those people I listed are getting more followers and growing their own twitterspherethose people I listed are getting more followers and growing their own twittersphere as well as gaining traffic (several hundred new readers for some) from other social media sites that got into the loop, including StumbleUpon. So, not caring what Bryony Garden thinks, it was Thursday that I coined the word scientwists. That seemed to give the page a new boost in terms of visitors and retweeters.For those interested in just how much impact this little project has had on my twitterhood. Here’s the twitter counter chart for the last week. The original post ran late on January 5 and was retweeted by various tweeps and scientwists on the 6th. If you’re a scientific twitterer, let me know, either follow me on twitter itself, comment on this post or the original 100+ scientwists page, or better still, tweet about the list. In return, I’ll add you to the list so we can expand this scientific twitterhood far and wide.Scientwists     ]]>
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Alchemical Start to the Year
http://www.sciencebase.com/science-blog/alchemical-start-to-the-year.html
http://www.sciencebase.com/science-blog/alchemical-start-to-the-year.html#comments
Wed, 07 Jan 2009 13:00:50 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=3060
Alchemical Start to the Year]]>
The Alchemist took a seasonable tipple over the holiday period but discovered that he needn’t have splashed out on all that expensive wine thanks to the field effect. He also discovers that all those spent coffee grounds he produces could be harvested to make biodiesel and hears of plans to rejuvenate the Baltic Sea with a giant fish-tank oxygenator. Drug users could soon be spotted by their glowing fingerprints, thanks to the latest development in forensic chemistry while a detector for melamine could help prevent future food scandals where this compound has been used illicitly to artificially inflate protein readings on baby milk and pet food. Finally, this week’s award could help boost European research in nanomedicine.You can read all the headlines and straplines in the current issue of The Alchemist on ChemWeb.comAlchemical Start to the Year     ]]>
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Reflecting on Climate Change
http://www.sciencebase.com/science-blog/reflecting-on-climate-change.html
http://www.sciencebase.com/science-blog/reflecting-on-climate-change.html#comments
Mon, 05 Jan 2009 13:00:47 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=3062
Reflecting on Climate Change]]>
 A radical plan to curb global warming and apparently reverse climate change caused by our rampant burning of fossil fuels since the industrial revolution would involve simply covering large areas of the world’s deserts with reflective sheeting.The idea is discussed in detail in the January issue of the International Journal of Global Environmental Issues and was reported widely in the press and across the blogosphere over the holiday period. Is it so much science fantasy or might it actually work? Engineers Takayuki Toyama of company Avix, Inc., in Kanagawa, Japan, and Alan Stainer of Middlesex University Business School, London, UK, suggest that there is too much pessimism around concerning our ability to realistically reduce atmospheric carbon dioxide levels so other measures may need to be taken.Reader Thomas Hewitt emailed his concerns about the proposal, he was worried that reflective sheeting would be expensive and intrusive and points out that diluted white latex paint can increase the reflectivity of porous surfaces, such as concrete, by ten percent. “An even better deployment [than painting desert rocks], would be to use it on manmade surfaces, in hot areas,” he says, “Locally, this could be seen as a rollback of the urban heat island effect. If done to enough surface area in high insolation areas, it might have a noticeable effect on global temperatures.”I asked Toyama about the viability of the team’s proposals. Is it ever likely to be viable to cover such large areas of the desert with reflective sheets weighted down with sandbags? “Yes it is viable,” he says, “We are often questioned if the area we propose is too small! Of course, compared to the surface area of the earth, it is fairly small.”But, how will such sheets be kept clean and maintained? And what will stop them being covered with dust in a desert? “The sheets would be laid in dry desert, with little rainfall, remembering that half the world’s desert area is composed of rock,” he adds, “Two known relevant examples come to mind: the NAZCA Lines in Peru have been unpaved for 1000 years and the successful covering sheets over snow in the North of Japan to reserve snow for summer skiing. Of course, the issue of maintenance work for sheets preservation needs to be investigated this would certainly provide jobs and benefit the area.”But, couldn’t the problem be solved by every household simply painting their roofs white instead? “Roof area would be insufficient and would contribute a small percentage,” he added, “However, as a supplemental solution, it would be helpful in contributing to energy saving to cool rooms. Indeed, this is already used in flat-roofed houses of rich people in Middle and Near East. In Japan, it is seen as effective in improving family comfort but is not perceived as sufficient to tackle global problems.”It still seems as far-fetched a macro-engineering project as subliming millions of tonnes of carbon dioxide at the bottom of the oceans. However, Toyama suggests that this is an unfair comparison. “Our concept is basically to alter the flow of heat whilst subliming relates to treating carbon dioxide stock problems itself, not a well established, suspicious and unreliable technology from the safety angle. As an overview, in management of technology terms, there must be a multi-faceted bold approach to carbon dioxide reduction or the target set of 50% by 2050 at the Touyako Summit will never be reached.”The obvious thing to note of course, is that surface albedo changes are not a complete replacement for greenhouse gas reductionsalbedo changes are not a complete replacement for greenhouse gas reductions, adds Hewitt. “For one, the distribution of the cooling effect will never be a good match to the warming effects of greenhouse gases,” he suggests, “Secondly, we still have the serious issue of ocean acidification. The key trick (if cooling via deliberate surface albedo intervention is technically doable), will be to prevent it from being used an excuse to continue business as usual emissions.”The team’s paper was apparently submitted in order to respond to current discussions about how a more cosmic view of Earth’s energy balance might be addressed regarding human activities. “Carbon dioxide reduction is insufficient from such a viewpoint,” Toyama adds.Takayuki Toyama, Alan Stainer (2009). Cosmic Heat Emission concept to ’stop’ global warming International Journal of Global Environmental Issues, 9 (1/2) DOI: 10.1504/IJGENVI.2009.022093Reflecting on Climate Change     ]]>
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Leukemia Tweezers
http://www.sciencebase.com/science-blog/leukemia-tweezers.html
http://www.sciencebase.com/science-blog/leukemia-tweezers.html#comments
Fri, 02 Jan 2009 13:00:33 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=3045
Leukemia Tweezers]]>
 The first 2009 issue of SpectroscopyNOW is now available:Tweezing out leukemia spectra - US researchers have used laser tweezers Raman spectroscopy (LTRS) to help them characterize the effects of different chemical fixation procedures on the spectra of healthy cells and leukemia cells and to avoid the misinterpretation of data.Crime and punishment - A truly interdisciplinary collaboration between biology, law and neuroscience at Vanderbilt University has used functional magnetic resonance imaging, fMRI, to watch how the brain changes when a person thinks about crime and punishment.Folding issues - NMR spectroscopy is helping US chemists work out shorter and simpler routes to protein-based drugs for treating a wide range of illnesses including diabetes, cancer, and hepatitis.By Jove, it’s hot and steamy - In 2007, astronomers discovered that a scorching-hot gas planet beyond 63 light years from our solar system is steaming with water vapour, now, it seems the planet, a hot Jupiters, also suffers from high carbon dioxide levels in its atmosphere.Opal reversal - Electrochemically oxidizing and reducing an inverse polymer-gel opal causes it to swell and shrink, which alters the wavelength of the light it diffracts brightly, from ultraviolet through the visible to the near infrared, the material could pave the way to new display and monitor technologies.X-rayed dinobird - Researchers at the SLAC National Accelerator Laboratory used the Stanford Synchrotron Radiation Lightsource (SSRL) to shine intense X-ray beams on the so-called “dinobird” to reveal chemical secrets that have been hidden from view for millions of years.Leukemia Tweezers     ]]>
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Happy New Year
http://www.sciencebase.com/science-blog/happy-new-year.html
http://www.sciencebase.com/science-blog/happy-new-year.html#comments
Thu, 01 Jan 2009 13:00:07 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=3038
Happy New Year]]>
Best wishes from me, David Bradley, for the coming year. Thanks for all your support and comments in 2008 and let’s hope for even more exciting science, technology, and medical news in 2009Happy New Year     ]]>
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How Alternative Medicine Fails Us
http://www.sciencebase.com/science-blog/how-alternative-medicine-fails-us.html
http://www.sciencebase.com/science-blog/how-alternative-medicine-fails-us.html#comments
Mon, 29 Dec 2008 13:00:01 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=3032
How Alternative Medicine Fails Us]]>
 I’m forever fending off the alternative medicine brigade who seem to clump around this website and email me all kinds of supposed miracle cures that will spell the end of all health ills. One herbal remedy I recently focused on is Rhodiola rosea, in which I critiqued a promotional email from a vested interest in the product. They made all kinds of claims for this material on the back of very limited clinical trials. Needless to say advocates of alternative medicine commented aplenty.As a chemist, I take a healthy and skeptical view of all the biochemical and physiological claims these people make for their products. I’m just worried that there are so many people who are perhaps desperate to fix their lives that they become easy prey for such marketing. Anyway, for those who feel a chemist has no place criticising their beloved remedy, I turned to a pharmaceutical expert in Sheryl Torr-Brown of the Future Trends in Health blog to provide some additional support for my argument. She has many years experience in pharmaceutical science and has no axe to grind and offers an honest appraisal of my original post and some of the comments left by Sciencebase readers.A glance at the scientific literature covering this herb seems to be minimal and biased in the main, she told me, and as such she agrees with my argument.“When dealing with alternative medicine,” she says, “it is not enough to be right if you want to avoid the attacks. You also have to be sensitive to the highly personal views of those who find benefit in the drug albeit most likely due to placebo effect.”This is perhaps an important point. Yes, the placebo effect is valid, but these remedies are usually very expensive and people are often spending their hard-earned money on what amounts to sugar pills, something that should be avoided perhaps especially in the current economic climate when every penny counts.“A major point that most of the non-scientific public do not understand is that there is no such thing as a safe drug, natural or not,” adds Torr-Brown, “The dose is the poison, as the father of modern toxicology, Paracelsus said in the fifteenth century. Anything and everything will be toxic if you have enough of it or it gets into the wrong place. Unfortunately, people are tired of Big Pharma advertising and the media frenzy around drug withdrawals.”She points out that ‘natural’ is sounding better and better to many folks, despite the existence of natural belladonna, natural cobra venom, oh, and natural background radiation. In the age of the Internet, it is now very easy to get positive anecdotes about anything. “Basically, one can decide what one wants to believe and then go find the evidence to support it,” Torr-Brown adds, “For scientists, we look for controlled studies to prove a point, whereas the general public are happy with a personal story or two of success.”Many people, including several of the original, negative commenters on my R rosea post, are grasping to find something that works for them. “You cannot discount [some of these views] from a human perspective, but it makes no sense scientificallyit makes no sense scientifically, adds Torr-Brown, “I am shocked by the number of people I know who pay huge amounts of money for the latest panacea only to give it up after a couple of months, usually due to lack of interest.”Related articles by ZemantaInnocent children and the most vulnerable can be hurt the most£200m boom as demand for ‘natural’ cures soarsRhodiola roseaHow not to do a study on the efficacy of “alternative” medicineRhodiola roseaHow Alternative Medicine Fails Us     ]]>
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K Barry Sharpless Live
http://www.sciencebase.com/science-blog/k-barry-sharpless-live.html
http://www.sciencebase.com/science-blog/k-barry-sharpless-live.html#comments
Fri, 26 Dec 2008 13:00:20 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=2936
K Barry Sharpless Live]]>
A recent live Webcast gave Professor K. Barry Sharpless, the 2001 Nobel Prize Winner in Chemistry, the opportunity to explore the intricacies of scientific discovery and how it is that when observation is concerned, good luck favours only the prepared mind.Neither the vidcheeo nor the sound quality are great…but you cannot have everything.The organisers also ran a one-on-one interview with SharplessYou can also watch student reaction to the Sharpless lectureK Barry Sharpless Live     ]]>
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New Year Science Books
http://www.sciencebase.com/science-blog/new-year-science-books.html
http://www.sciencebase.com/science-blog/new-year-science-books.html#comments
Wed, 24 Dec 2008 13:00:46 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=3023
New Year Science Books]]>
 If you’re New Year’s resolution is to read more books, then check out the latest additions to my bulging shelves, order them quickly on Amazon and you may just have them in time to fulfill that New Year’s resolution:Experimental heart - a racy read set in the world of pipettors and gene splicing, a first novel by my good friend Jennifer Rohn. creator of LabLit.com who blogs on Nature Network at Mind the Gap.Mars 3-D by Jim Bell - does what it says on the tin, super 3D images of the Red Planet with a free set of red-green spectacles, my kids were very impressed.Exploring the Mystery of Matter - ATLAS - a gripping read of what we can expect once the LHC experiment is finally up and running.Hubble - Imaging space and time - the most cosmic coffee table book you could ever wish for from National GeographicThe Science Book - also from NG, this mighty tome tells you “everything you need to know about the world and how it works, would make a fantastic gift for a homeschooler.Also for review this week is yet more cosmic stuff this time on DVD: “The Universe” (they don’t for small-scale names these days, do they?) Complete season 2 of the History Television Network rroduction (five DVDs)New Year Science Books     ]]>
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Vote for Sciencebase
http://www.sciencebase.com/science-blog/vote-for-sciencebase-2.html
http://www.sciencebase.com/science-blog/vote-for-sciencebase-2.html#comments
Tue, 23 Dec 2008 15:09:16 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=3055
Vote for Sciencebase]]>
 Sciencebase is currently #4 in the Shorty Awards science category, please check out the site and if you think it worthy give us your vote via the awards nomination page or on Twitter.The Shorty Awards honour the world’s top Twitterers in a variety of categories.Here’s what nominators have said about sciencebase so far:“I want 2 nominate @sciencebase in #science, b/c how can u get round twitter sciencebase in this category? He’s gr8 & has wit!” - @laikas“I nominate @sciencebase for a Shorty Award in #science because he keeps his hand on pulse of science.” - @freesci“I nominate @sciencebase for a Shorty Award in #science because he’s informative, witty, relevant and kind.” - @Jennifer_PYour vote would be much appreciated!Vote for Sciencebase     ]]>
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Sperm, Discharge, Heroin, and Alzheimers
http://www.sciencebase.com/science-blog/sperm-discharge-heroin-and-alzheimers.html
http://www.sciencebase.com/science-blog/sperm-discharge-heroin-and-alzheimers.html#comments
Mon, 22 Dec 2008 13:00:13 +0000
David Bradley
http://www.sciencebase.com/science-blog/?p=2943
Sperm, Discharge, Heroin, and Alzheimers]]>
 Batteries are included (unfortunately) - A chemical cocktail of toxic gases is released when you burn alkaline batteries, according to the latest research from Spain. The investigating team highlights the issue with respect to municipal waste incineration, which is used as an alternative to landfill and suggests that recycling is perhaps the only environmentally viable alternative.Today, UK government departments BERR and Defra, in conjunction with the Devolved Administrations,today published a Consultation Document containing draft Regulations setting out proposed systems for the collection, treatment and recycling of waste portable, industrial and automotive batteries.Cutting heroin analysis - Analysing samples of street heroin just got easier as researchers have developed a statistical method for removing uninformative signals from their near-infra-red spectra of seized samples.Sperm and eggs - Scientists in Sweden have determined the precise molecular structure of a protein, ZP3, essential to the interaction of the mammalian egg coat and sperm. The work could eventually lead to improved contraceptives, has implications for fertility studies, and might, in some sense, explain how new species arise.Untangling Alzheimer molecules - Magnetic resonance spectroscopy provides new clues about how a dipeptide molecule blocks the formation of the toxic amyloid beta-peptide aggregates in the mouse brain. The discovery could put paid to the theory that amyloid beta-peptide causes Alzheimer’s disease and suggest a therapeutic lead that focus on the real culprit at an earlier stage.Sperm, Discharge, Heroin, and Alzheimers     ]]>
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