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In the video, which was posted online on March 7, Don Yeomans, head of the Near-Earth Objects Program Office at NASA/JPL, explains away many of the most frequently cited doomsday scenarios. [See video] Addressing the belief that the calendar used by the ancient Mayan civilization comes to a sudden end in December 2012, and that this will coincide with a cataclysmic, world-ending event, Yeomans said: "Their calendar does not end on December 21, 2012; it's just the end of the cycle and the beginning of a new one. It's just like on December 31, our calendar comes to an end, but a new calendar begins on January 1. " 6 Insane Discoveries That Science Can't Explain. [1208.2686] Exploring scientists' working timetable: Do scientists often work overtime? The earliest split in modern humanity was 100,000 years ago. 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 (email@example.com) Received June 6, 2012.
Accepted September 24, 2012. The derived proportions of the human hand may provide supportive buttressing that protects the hand from injury when striking with a fist. Flexion of digits 2–5 results in buttressing of the pads of the distal phalanges against the central palm and the palmar pads of the proximal phalanges. The Loom. Your hands are, roughly speaking, 360 million years old.
Before then, they were fins, which your fishy ancestors used to swim through oceans and rivers. Once those fins sprouted digits, they could propel your salamander-like ancestors across dry land. Fast forward 300 million years, and your hands had become fine-tuned for manipulations: your lemur-like ancestors used them to grab leaves and open up fruits.
Rediscovering Life. Notes and Commentaries Toward a Biology Worthy of Life Stephen L.
Talbott RSS Feed for this page: This page serves as a portal introducing all new content for the “Biology Worthy of Life” project: BiologyWorthyofLife.org. Copyright 2014 The Nature Institute. You will typically find here notes and commentaries on the current biological literature. Scientific Ideas for the Garbage Dump - On Science Blogs. Hello there!
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. 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.
Both were by Ernest Rutherford, who had won the 1908 Nobel Prize in Chemistry in part for his discovery of the alpha particle, which he later proved was the nucleus of a helium atom. By 1911, scientists had already measured the charge and mass of an electron. Child creates molecule that could be used for energy storage or explosives. Prof.
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. Lazen built the model out of balls representing oxygen, nitrogen and carbon atoms, as part of a science exercise at Border Star Montessori School. 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.
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. Physics and biology sites. Specials archive : Nature.
Prokaryotes, Eukaryotes, & Viruses Tutorial. 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. 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. Understanding Chemistry - interesting links. Chemistry - few periodic rules to rule them all :)