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Gravity

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Free conservation biology textbook: Conservation Biology for All Oxford University Press makes conservation biology textbook by some of the world's most prominent ecologists and conservation biologists available as free download Conservation Biology for All provides cutting-edge but basic conservation science to a global readership. A series of authoritative chapters have been written by the top names in conservation biology with the principal aim of disseminating cutting-edge conservation knowledge as widely as possible. Important topics such as balancing conversion and human needs, climate change, conservation planning, designing and analyzing conservation research, ecosystem services, endangered species management, extinctions, fire, habitat loss, and invasive species are covered. Numerous text boxes describing additional relevant material or case studies are also included.

Clockbusters See the clues, guess the movie. And if time runs out? KABOOM. That’s what happens when you pack a web site full of so many affordable images (like the ones used to create this game). Keep playing until you guess all 50 movies. Skip hard ones and get them on the next pass. Robokill - Now with free expansion pack! - Rock Solid Arcade If you have a popup blocker installed, you can purchase the full version manually from here. Robokill: Titan Prime now available on the iPad! Click here. The World of Everyday Experience, In One Equation Longtime readers know I feel strongly that it should be more widely appreciated that the laws underlying the physics of everyday life are completely understood. (If you need more convincing: here, here, here.) For purposes of one of my talks next week in Oxford, I thought it would be useful to actually summarize those laws on a slide. Here’s the most compact way I could think to do it, while retaining some useful information. (As Feynman has pointed out, every equation in the world can be written U=0, for some definition of U — but it might not be useful.)

How Brainless Slime Molds Redefine Intelligence [Video] Gardeners sometimes encounter them in their backyards—spongy yellow masses squatting in the dirt or slowly swallowing wood chips. Hikers often spot them clinging to the sides of rotting logs like spilled bowls of extra cheesy macaroni. In Mexico some people reportedly scrape their tender bodies from trees and rocks and scramble them like eggs. They are slime molds: gelatinous amoebae that have little to do with the kinds of fungal mold that ruin sourdough and pumpernickel. Biologists currently classify slime molds as protists, a taxonomic group reserved for "everything we don't really understand," says Chris Reid of the University of Sydney.

Evolution: Education and Outreach - Free Access Available As of January 2013 Evolution: Education & Outreach is a peer-reviewed open access journal published under the brand SpringerOpen. From 2013 onward all new articles published in the journal are freely and permanently available online for anyone, anywhere and at any time. This journal promotes accurate understanding and comprehensive teaching of evolutionary theory for a wide audience. Evolution: Education and Outreach addresses the question of why we should care about evolution by exploring the practical applications of evolutionary principles in daily life and the impact of evolutionary theory on culture and society throughout history.

Software Library: MS-DOS Games : Free Software : Download & Streaming Video game "Doom 2" / "Doom II" for MS-DOS, 1994. The zip includes "DeathManager", a utility that helped setting up multiplayer games (IPX, modem or serial cable) favoritefavoritefavoritefavoritefavorite ( 7 reviews ) Topics: video game, MS-DOS Also For Acorn 32-bit, Amiga, Amstrad CPC, Atari ST, BBC Micro, CDTV, Commodore 64, Electron, FM Towns, Macintosh, OS/2, Palm OS, PC-98, Sharp X68000, SNES, Symbian, Wii, Windows, Windows 3.x, ZX Spectrum Developed by Maxis Software Inc.

A mathematical formalisation of dimensional analysis Mathematicians study a variety of different mathematical structures, but perhaps the structures that are most commonly associated with mathematics are the number systems, such as the integers or the real numbers . Indeed, the use of number systems is so closely identified with the practice of mathematics that one sometimes forgets that it is possible to do mathematics without explicit reference to any concept of number. For instance, the ancient Greeks were able to prove many theorems in Euclidean geometry, well before the development of Cartesian coordinates and analytic geometry in the seventeenth century, or the formal constructions or axiomatisations of the real number system that emerged in the nineteenth century (not to mention precursor concepts such as zero or negative numbers, whose very existence was highly controversial, if entertained at all, to the ancient Greeks).

The mind-bending effects of foreign accent syndrome A little-known condition causes people to adopt a new accent – and lose a part of their identity in the process, finds David Robson. Julie Matthias’s family have a game they sometimes like to play after she comes home, disappointed, from another doctor’s appointment. During dinner, they pick a foreign accent, and challenge each other to speak in the strange voice. The playful jokes help to distract from the distress of a condition that her doctors have struggled to treat. Despite having lived in the UK her whole life, Matthias suddenly found that she no longer speaks with an English accent – sounding French or Chinese instead.

An Error Occurred Setting Your User Cookie This site uses cookies to improve performance. If your browser does not accept cookies, you cannot view this site. Setting Your Browser to Accept Cookies There are many reasons why a cookie could not be set correctly. Below are the most common reasons: You have cookies disabled in your browser. Binary - it's digitalicious! How binary works: The binary number system (aka base 2) represents values using two symbols, typically 0 and 1. Computers call these bits. A bit is either off (0) or on (1). When arranged in sets of 8 bits (1 byte) 256 values can be represented (0-255).

HyperPhysics Concepts About HyperPhysics Rationale for Development HyperPhysics is an exploration environment for concepts in physics which employs concept maps and other linking strategies to facilitate smooth navigation. For the most part, it is laid out in small segments or "cards", true to its original development in HyperCard. The entire environment is interconnected with thousands of links, reminiscent of a neural network. The bottom bar of each card contains links to major concept maps for divisions of physics, plus a "go back" feature to allow you to retrace the path of an exploration.

Timeline: The evolution of life - life - 14 July 2009 Read full article Continue reading page |1|2|3|4 There are all sorts of ways to reconstruct the history of life on Earth. Explanation of the Density Anomalies of Water (D1-D22) The density of ice increases on heating (up to 70 K) Water shrinks on melting Pressure reduces ice's melting point Liquid water has a high density that increases on heating (up to 3.984 °C) The surface of water is denser than the bulk

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