Post List

  • November 30, 1999
  • 12:00 AM

On Beauty, History, and Her Story

by Vatche Sahakian in Schrödinger's Dog

A historical review of the importance of symmetry and Noether's theorem... Read more »

Rubens de Melo Marinho Jr. (2006) Noether's theorem in classical mechanics revisited. info:/

  • November 30, 1999
  • 12:00 AM

Relating Thermodynamic Entropy to Information Entropy with Maxwell’s Demon

by Ryan Somma in ideonexus

A background on Maxwell's Demon and the thought experiments tackling the issue of converting information into energy.... Read more »

  • November 30, 1999
  • 12:00 AM

Cheap Cell-Phone Microscopes Might Make Distance Ed Science Labs Feasible

by Michael Windelspecht in RicochetScience

Review of recent advances in cell phone microscopes... Read more »

  • November 30, 1999
  • 12:00 AM

Comparing Apples with Oranges: B&W

by Peter Nollert in Protein Crystallization Blog

Identifying individual amino acid residues within a GPCR and comparing these across different receptors is a routine task that’s helped by a widely accepted nomenclature system: that of Ballesteros and Weinstein.... Read more »

  • November 30, 1999
  • 12:00 AM

The Earth has one Moon, but it’s not the only rocky thing orbiting us…..

by Niall in we are all in the gutter

It's long been claimed that the Earth has more than one Moon, it doesn't. But while there is just one big rocky thing in a stable orbit around us there are also a host of smaller bodies that perform a temporary dance with the Earth.... Read more »

  • November 30, 1999
  • 12:00 AM

Ohms law rescued (again)

by Rik in NNNS chemistry blog

Ohm's law (current proportional to voltage) was first formulated in 1827 and the discoverer George Ohm would be pleased to know that in 2012 the law still holds even at the smallest possible nanoscale. Weber et al. in their report in Science do not explain how they would expect conductors to behave in another way at this nanoscale but ventured ahead anyway to create a truly tiny electrical wire, run a current through it and measure resistivity. ... Read more »

Weber, B., Mahapatra, S., Ryu, H., Lee, S., Fuhrer, A., Reusch, T., Thompson, D., Lee, W., Klimeck, G., Hollenberg, L.... (2012) Ohm's Law Survives to the Atomic Scale. Science, 335(6064), 64-67. DOI: 10.1126/science.1214319  

  • November 30, 1999
  • 12:00 AM

Many Vegetarians Consume Animal-Derived Products in Medicines

by United Academics in United Academics

What should vegetarians do when medicines contain animal products? The answer seems an easy one: to refuse them or to act according to their conscience. But what if the consumers are not appropriately informed about the medicine components, or the doctors not even know that it contains animal products?... Read more »

  • November 30, 1999
  • 12:00 AM

Exploring groundwater arsenic contamination in Bangladesh

by brettcherry in Institute of Hazard, Risk and Resilience Blog

Arsenic contaminated groundwater currently threatens the health of 70 million people in 61 of 64 districts in Bangladesh. Many people living in districts plagued with arsenic contaminated ground water regularly drink water with concentrations of arsenic far above national and WHO standards. An important study from Prof Peter Atkins and Dr Manzurul Hassan explores how groundwater arsenic concentration varies throughout areas of southwest Bangladesh. ... Read more »

  • November 30, 1999
  • 12:00 AM

The Secret Feeding of Some Active Galaxies' Supermassive Black Holes--Uncovered

by Brooke N in Smaller Questions

New studies in high-energy astronomy have shown that there are many more galaxies with central supermassive black holes that are actively accreting material. In a new gamma-ray survey, about 24% of the active galaxies were not previously known to have active black hole accretion, as they did not show up in lower-energy observations.... Read more »

  • November 30, 1999
  • 12:00 AM

“Beware of Exercise” is a Sexy Headline

by nooffensebut in The Unsilenced Science

A new study that raised concerns about exercise should instead raise concerns about obesity.... Read more »

Claude Bouchard, Steven Blair, Timothy Church, Conrad Earnest, James Hagberg, Keijo Häkkinen, Nathan Jenkins, Laura Karavirta, William Kraus, Arthur Leon.... (2012) Adverse Metabolic Response to Regular Exercise: Is It a Rare or Common Occurrence?. PLOS One, 7(5). info:/10.1371/journal.pone.0037887

  • November 30, 1999
  • 12:00 AM

Working Late in Pregnancy May Be as Bad for the Baby as Smoking: Research

by United Academics in United Academics

Researchers at the University of Essex, in the UK, have found that babies born to women who kept working during their eighth month of pregnancy tend to weight 230g less than those born to mothers who stopped working. The harm was bigger when the women had lower levels of education, while there was no harm at all when they were younger than 24.... Read more »

  • November 30, 1999
  • 12:00 AM

Methylome Data in Lethal Prostate Cancer Supports Personalized Medicine

by Nicole Kelesoglu in E3 Engaging Epigenetics Experts

Recent surprising evidence has shown that metastatic tumors usually do not vary in their genomes within an individual. Yet, these tumors behave differently at different sites around the body. Does that mean that epigenetic profiling will be too variable to target for cancer treatment? In a word, no.... Read more »

  • November 30, 1999
  • 12:00 AM

The good, bad, and ugly of protein refolding

by Scott Jeffers in Protein Solubility Blog

The good news is that 95% of the protein aggregates in the inclusion body are your protein of interest. To get a 95% pure sample of protein you just have to lyse the cells using your preferred method (sonication works well, as does French press) in a lyses buffer containing Triton X-100. You then centrifuge your inclusion bodies containing your aggregated protein and discard the soluble supernatant. Next, you wash your inclusion body pellet in lysis buffer without Triton X-100 to remove the dete........ Read more »

  • November 30, 1999
  • 12:00 AM

Early Human Diet Went Grassy, Early

by Andrew Porterfield in United Academics

A series of studies from the University of Utah found that our ancestors expanded their culinary tastes to grasses and grains, as much as 3.5 million years ago.... Read more »

Cerling TE, Manthi FK, Mbua EN, Leakey LN, Leakey MG, Leakey RE, Brown FH, Grine FE, Hart JA, Kaleme P.... (2013) Stable isotope-based diet reconstructions of Turkana Basin hominins. Proceedings of the National Academy of Sciences of the United States of America. PMID: 23733966  

Wynn JG, Sponheimer M, Kimbel WH, Alemseged Z, Reed K, Bedaso ZK, & Wilson JN. (2013) Diet of Australopithecus afarensis from the Pliocene Hadar Formation, Ethiopia. Proceedings of the National Academy of Sciences of the United States of America. PMID: 23733965  

Sponheimer M, Alemseged Z, Cerling TE, Grine FE, Kimbel WH, Leakey MG, Lee-Thorp JA, Manthi FK, Reed KE, Wood BA.... (2013) Isotopic evidence of early hominin diets. Proceedings of the National Academy of Sciences of the United States of America. PMID: 23733964  

  • November 30, 1999
  • 12:00 AM


by Eugenio Maria Battaglia in Science to Grok

In 2008, doctor Sergio Canavero, an italian neurosurgeon based in Turin, IT, have awakened a 20 years old lady from a permanent post-traumatic vegetative state, by means of a bifocal extradural cortical electro-stimulation. Today, while Science still find it hard to explain consciousness and embodied cognition – the world-class neurosurgeon made a shock announcement: “I’m ready for the first head transplant on a man.”

In the manuscript published on Surgical Neurology I........ Read more »

  • November 30, 1999
  • 12:00 AM

Regenerating the aged thymus

by Caroline Hendry in the Node

The latest issue of Development includes a paper by Clare Blackburn and colleagues at the Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, showing that the aged mouse thymus can be regenerated in vivo by the upregulation of a single transcription factor, FOXN1.... Read more »

  • November 30, 1999
  • 12:00 AM

How eating several smaller sized chocolates makes you look greedy and impulsive: the unit size effect of indulgent food

by Ellen van Kleef in Food Intake Control

Imagine you are offered a package full of delicious chocolates. Would the size of the pieces of chocolate influences how much you eat?

Yes, it does matter. This blog post is about the unit size effect of indulgent food and why consumers eat less with smaller unit sizes.
... Read more »

  • November 30, 1999
  • 12:00 AM

A miniature turbine with blades one atom thick

by thisscienceiscrazy in This Science Is Crazy!

Chinese scientists have designed a nano-turbine using carbon nanotubes (CNT) and graphene.... Read more »

Li Jingyuan, Lina Zhao, Xingfa Gao, Yuliang Zhao, & Ruhong Zhou. (2014) Rotation Motion of Designed Nano-Turbine. Scientific Reports. DOI:  

  • November 30, 1999
  • 12:00 AM

Productivity Paradox 2.0

by Paco Jariego in Mind the Post

Despite ongoing IT-related innovation, aggregate U.S. productivity growth slowed markedly after 2004. While economists are again unable to find the productivity in their statistics, many people in Silicon Valley think that this slowdown has to be at least in part illusory. Who is right?... Read more »

Byrne, D., Fernald, J., & Reinsdorf, M. (2016) Does the United States have a Productivity Slowdown or a Measurement Problem. Finance and Economics Discussion Series, 2016(017), 1-74. DOI: 10.17016/FEDS.2016.017  

Chad Syverson. (2013) Will History Repeat Itself? Comments on “Is the Information Technology Revolution Over?”. International Productivity Monitor, 37-40. info:/

  • November 30, 1999
  • 12:00 AM

The geometry of consciousness is a multi-dimensional math trip

by amanda alvarez in It Ain't Magic

Amanda Alvarez writes about how neuroscientists are studying consciousness with mathematics.... Read more »

Oizumi M, Tsuchiya N, & Amari SI. (2016) Unified framework for information integration based on information geometry. Proceedings of the National Academy of Sciences of the United States of America, 113(51), 14817-14822. PMID: 27930289  

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