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The earliest split in modern humanity was 100,000 years ago. What's interesting is that as a result of this split, populations within the Khoisan group should about as much genetic diversity as the rest of humanity does combined.

The earliest split in modern humanity was 100,000 years ago

And that's including every other genotype within Africa. Once you eliminate the African populations from the pool it gets even narrower, to the point that the genetic differences between Eurasians, Amerinds, and Australian aborigines are remarkably small comparatively. Did fist fighting change the course of human evolution? Protective buttressing of the human fist and the evolution of hominin hands. + Author Affiliations ↵* Author for correspondence (carrier@biology.utah.edu) Received June 6, 2012.

Protective buttressing of the human fist and the evolution of hominin hands

Accepted September 24, 2012. The Loom. Rediscovering Life. Notes and Commentaries Toward a Biology Worthy of Life Stephen L.

Rediscovering Life

Talbott. Life Sciences. SCIENCE. Scientific Ideas for the Garbage Dump - On Science Blogs. Hello there!

Scientific Ideas for the Garbage Dump - On Science Blogs

If you enjoy the content on On Science Blogs, consider subscribing for future posts via email or RSS feed. These scientific ideas will drive you crazy.

New Earth Space

New Research Info. The 100 Top Science Stories of 2010. Ernest Rutherford’s Nucleated Century. The critical discovery in this atomic model emerged a century ago in a talk before the Manchester Literary and Philosophical Society in March 1911 and a paper published soon after in the Philosophical Magazine.

Ernest Rutherford’s Nucleated Century

Child creates molecule that could be used for energy storage or explosives. Prof.

Child creates molecule that could be used for energy storage or explosives

Robert Zoellner, with a model of the molecule created by ten year-old Clara Lazen I don't know about other people, but when I was a child, I was inventing things such as a musical instrument made out of a folded piece of cardboard and some rubber bands. Ten year-old Clara Lazen, however, has done something a little more noteworthy. The fifth-grader from Kansas City, Missouri, built a model of a molecule that is new to science. If the molecule itself were to actually be created, it could possibly be used for energy storage, or in explosives. On Truth & Reality: Philosophy Physics Metaphysics of Space, Wave Structure of Matter. Famous Science Art Quotes. JST Virtual Science Center.

Science. The more we understand about science and its complexities, the more important it is for scientific data to be shared openly.

Science

It’s not useful to have ten different labs doing the same research and not sharing their results; likewise, we’re much more likely to be able to pinpoint diseases if we have genomic data from a large pool of individuals. Since 2004, we’ve been focusing our efforts to expand the use of Creative Commons licenses to scientific and technical research. Science Advisory Board Open Access The Scholars’ Copyright Project Creative Commons plays an instrumental role in the Open Access movement, which is making scholarly research and journals more widely available on the Web.

Scientific Representation

CHEMISTRY & PHYSICS. Physics and biology sites. Otherwise, there are a quite a lot of sites out there covering physics and biology at this level, but my impression of them is that they would be good for revision, but not so good if you were struggling to understand something in the first place.

physics and biology sites

If you want to find what is available a Google search on "a level" physics or "a level" biology should throw up a good selection. If you are doing some other exam - IB, for example, or Scottish Highers - you could try searching for these in a similar way, but it would still be worth looking for A level sites (and vice versa for A level students). Physics, especially, is probably a difficult subject to explain simply on the web, because so much of it is mathematical. Specials archive : Nature. Prokaryotes, Eukaryotes, & Viruses Tutorial.

Chemistry - few periodic rules to rule them all :) Interactive Concepts in Biochemistry - Interactive Animations. Organic Chemistry Animations ChemTube3D. CHEM 1211 COURSE CONTENTS. Virtual Laboratory: Thermodynamic Equilibrium. Here is a snapshot of the applet.

Virtual Laboratory: Thermodynamic Equilibrium

Read the instructions and then go to the links at the bottom of this page to activate various kinds of experiments that can be done with this applet. This applet is designed to simulate the diffusion process which occurs when gases of different temperatures are mixed. To activate the mixing click one time on the red vertical bar that separates the two chambers. After a few moments, the bar will turn green and the gases will start to mix and share their energy. Click chemistry. Click chemistry, a term coined by K.

Click chemistry

Barry Sharpless in 1998, was first fully described by K. Understanding Chemistry - interesting links.

Other Sciences

REALLY GOOD STUFF. Autopoiesis. SCIENCE. ORGANICA. Ethnobotany. Health ReferencEd. Science News & Organizations. 13 things that do not make sense - space - 19 March 2005. Read full article. 13 more things that don't make sense. Cookies on the New Scientist website close Our website uses cookies, which are small text files that are widely used in order to make websites work more effectively. To continue using our website and consent to the use of cookies, click away from this box or click 'Close' Find out about our cookies and how to change them Log in Your login is case sensitive I have forgotten my password close My New Scientist Look for Science Jobs. NASA video crushes 2012 Mayan apocalypse myth. Scientists at NASA's Jet Propulsion Laboratory have put out a new video to address false claims about the "Mayan apocalypse," a non-event that some people believe will bring the world to an end on Dec. 21.

6 Insane Discoveries That Science Can't Explain.