Tree of Life Return to "Download Files" Page You are welcome to download the following graphic image of the Tree of Life for non-commercial, educational purposes: Tree of Life (~3,000 species, based on rRNA sequences) (pdf, 368 KB) (see Science, 2003, 300:1692-1697) This file can be printed as a wall poster. Tree of Life tattoo, courtesy of Clare D'Alberto, who is working on her Ph.D. in biology at the University of Melbourne. The organisms depicted in this tattoo are (starting at 4 o'clock and going around clockwise): (1) a cyanobacterium (Anabaena); (2) a radiolarian (Acantharea); (3) a dinoflagellate (Ceratium); (4) an angiosperm (Spider Orchid); (5) a couple species of fungi (Penicillium and a yeast); (6) a ctenophore (comb jelly); (7) a mollusc (nudibranch); (8) an echinoderm (brittle star); and (9) a vertebrate (Weedy Sea Dragon). Here is another great Tree of Life tattoo! Cover of Molecular Systmatics, 2nd ed Here is yet another version from Hannah Udelll at the University of Wisconson-Madisson.
Tesseract A generalization of the cube to dimensions greater than three is called a "hypercube", "n-cube" or "measure polytope".[1] The tesseract is the four-dimensional hypercube, or 4-cube. According to the Oxford English Dictionary, the word tesseract was coined and first used in 1888 by Charles Howard Hinton in his book A New Era of Thought, from the Greek τέσσερεις ακτίνες ("four rays"), referring to the four lines from each vertex to other vertices.[2] In this publication, as well as some of Hinton's later work, the word was occasionally spelled "tessaract." Some people[citation needed] have called the same figure a tetracube, and also simply a hypercube (although a tetracube can also mean a polycube made of four cubes, and the term hypercube is also used with dimensions greater than 4). Geometry[edit] Since each vertex of a tesseract is adjacent to four edges, the vertex figure of the tesseract is a regular tetrahedron. A tesseract is bounded by eight hyperplanes (xi = ±1). See also[edit]
The 2011 Nobel Prize in Physics - Press Release 4 October 2011 The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for 2011 with one half to Saul Perlmutter The Supernova Cosmology Project Lawrence Berkeley National Laboratory and University of California, Berkeley, CA, USA and the other half jointly to Brian P. and Adam G. "for the discovery of the accelerating expansion of the Universe through observations of distant supernovae" Written in the stars "Some say the world will end in fire, some say in ice..." * What will be the final destiny of the Universe? In 1998, cosmology was shaken at its foundations as two research teams presented their findings. The research teams raced to map the Universe by locating the most distant supernovae. The teams used a particular kind of supernova, called type Ia supernova. For almost a century, the Universe has been known to be expanding as a consequence of the Big Bang about 14 billion years ago. Saul Perlmutter, U.S. citizen. Brian P. Adam G. Recommended:
sleepyti.me bedtime calculator Magic mushrooms’ effects illuminated in brain imaging studies Brain scans of people taking psilocybin have given scientists the most detailed picture to date of how psychedelic drugs work. Brain scans of people under the influence of the psilocybin, the active ingredient in magic mushrooms, have given scientists the most detailed picture to date of how psychedelic drugs work. The findings of two studies being published in scientific journals this week identify areas of the brain where activity is suppressed by psilocybin and suggest that it helps people to experience memories more vividly. In the first study, published today in Proceedings of the National Academy of Sciences (PNAS), 30 healthy volunteers had psilocybin infused into their blood while inside magnetic resonance imaging (MRI) scanners, which measure changes in brain activity. The scans showed that activity decreased in "hub" regions of the brain - areas that are especially well-connected with other areas. R Carhart-Harris et al. R Carhart-Harris et al.
Venus to appear in once-in-a-lifetime event On 5 and 6 June this year, millions of people around the world will be able to see Venus pass across the face of the Sun in what will be a once-in-a-lifetime experience. It will take Venus about six hours to complete its transit, appearing as a small black dot on the Sun's surface, in an event that will not happen again until 2117. In this month's Physics World, Jay M Pasachoff, an astronomer at Williams College, Massachusetts, explores the science behind Venus's transit and gives an account of its fascinating history. Transits of Venus occur only on the very rare occasions when Venus and Earth are in a line with the Sun. At other times Venus passes below or above the Sun because the two orbits are at a slight angle to each other. Building on the original theories of Nicolaus Copernicus from 1543, scientists were able to predict and record the transits of both Mercury and Venus in the centuries that followed. For more information see Wikipedia article.
Can hot water freeze faster than cold water? [Physics FAQ] - [Copyright] Written Nov, 1998 by Monwhea Jeng (Momo), Department of Physics, University of California Yes — a general explanation History of the Mpemba Effect More-detailed explanations References Yes — a general explanation Hot water can in fact freeze faster than cold water for a wide range of experimental conditions. The phenomenon that hot water may freeze faster than cold is often called the Mpemba effect. This seems impossible, right? What's wrong with this proof is that it implicitly assumes that the water is characterized solely by a single number — its average temperature. It is still not known exactly why this happens. Why hasn't modern science answered this seemingly simple question about cooling water? So with the limited number of experiments done, often under very different conditions, none of the proposed mechanisms can be confidently proclaimed as "the" mechanism. Finally, supercooling may be important to the effect. History of the Mpemba Effect Evaporation
First animation reveals how a face forms in the womb Sandrine Ceurstemont, editor, New Scientist TV Your pretty face wasn't always so pretty: the first animation of a face forming in the womb reveals how different features morph during development. The time-lapse, produced for the BBC series Inside the Human Body, is based on human embryo scans captured between 1 and 3 months after conception, the period during which a face develops. A close look at the animation reveals that a face forms from three main features that rotate into place, meeting at the philtrum, the groove above the top lip. For more intriguing views of the body, watch Inside the Human Body, which will be airing in the UK and Ireland on 16 July at 9 pm as part of a month of science programmes on Eden TV. If you enjoyed this video, you might like to see the first MRI movie of a baby's birth or watch an incubator spy on a developing embryo.
This Cute Chat Site Could Save Your Life and Help Overthrow Your Government | Threat Level Nadim Kobeissi, creator of Cryptocat, spoke in mid-July at the HOPE conference, held at New York’s Hotel Pennsylvania every two years. Credit: Quinn Norton/Wired Twenty-one-year-old college student Nadim Kobeissi is from Canada, Lebanon and the internet. He is the creator of Cryptocat, a project “to combine my love of cryptography and cats,” he explained to an overflowing audience of hackers at the HOPE conference on Saturday, July 14. The site, crypto.cat, has a chunky, 8-bit sensibility, with a big-eyed binary cat in the corner. Cryptocat is an encrypted web-based chat. “The fact that you don’t have to install anything, the fact that it works instantly, this increases security,” he explained, sitting down with Wired at HOPE 9 to talk about Cryptocat, activism and getting through American airports. To create Cryptocat Kobeissi had to deal with controversies in computer security, usability and geo-politics.