Science Fair Project Ideas Please ensure you have JavaScript enabled in your browser. If you leave JavaScript disabled, you will only access a portion of the content we are providing. <a href="/science-fair-projects/javascript_help.php">Here's how.</a> Help Me Find a Project Use the Topic Selection Wizard tool: Answer a short questionnaire about your interests & hobbies It uses your responses to recommend ideas you will enjoy
Online TEFL courses Interactive learning modules to make TEFL more than just boring text! In-depth summaries that you can download and use to learn anywhere Video content so you understand how the theory applies to real classroom scenarios Wealth of useful links to expand your TEFL knowledge Multiple-choice quizzes to check your understanding 10 Awesome Online Classes You Can Take For Free Cool, but you need iTunes for nearly everything, and that gets an 'F.' Are there really no other places to get these lessons? I was sure there are some on Academic Earth. Flagged
Snake oil? Scientific evidence for health supplements Updated September 2015 with a revitalising boost of fresh data. New entries include melatonin, proving travellers were right about its effect on sleep; and good evidence for Vitamin D for flu, bones and long life. Evidence for valerian as a cure for anxiety has dropped, as has any likelihood that cranberry juice has impact on urinary infections. Thanks to visitor suggestions we’ve added entries for supplements that may in some cases be harmful, including Vitamin A, which has been linked to birth defects. Note: You might see multiple bubbles for certain supplements.
How to Map Time: A Visual History of the Timeline - Maria Popova - Entertainment A journey through man's attempts at visualizing time itself I was recently asked to select my all-time favorite books for the lovely Ideal Bookshelf project by The Paris Review's Thessaly la Force. Despite the near-impossible task of shrinking my boundless bibliophilia to a modest list of dozen or so titles, I was eventually able to do it, and the selection included Cartographies of Time: A History of the Timeline by Daniel Rosenberg and Anthony Grafton. Among both my 7 favorite books on maps and my 7 favorite books on time, this lavish collection of illustrated timelines traces the history of graphic representations of time in Europe and the United States from 1450 to the present, featuring everything from medieval manuscripts to websites to a chronological board game developed by Mark Twain. The first chapter, "Time in Print," provides some context for the images:
start [Skychart] For use with Linux, Windows, Mac OS X This program enables you to draw sky charts, making use of the data in many catalogs of stars and nebulae. In addition the position of planets, asteroids and comets are shown. The purpose of this program is to prepare different sky maps for a particular observation. A large number of parameters help you to choose specifically or automatically which catalogs to use, the colour and the dimension of stars and nebulae, the representation of planets, the display of labels and coordinate grids, the superposition of pictures, the condition of visibility and more. All these features make this celestial atlas more complete than a conventional planetarium.
Weekend Feature: Human Genome Reveals Entire Span of Species Stored inside your genome are clues to the history of humankind, including global migrations and population crashes, according to researchers who have analyzed DNA pioneer, Craig Venter's publicly published DNA sequence, and those of 6 others, to reveal major milestones in human history. The analysis suggests that descendants of the first humans to leave Africa shrunk to as few as 1,000 reproductively active individuals before rebounding. The study also suggests that, contrary to popular theories, these early humans continued to breed with sub-Saharan Africans until as recently as 20,000 years ago. Genetic researchers have traditionally compared DNA sequences from populations around the world to determine how populations relate to one another and when they might have branched off. "Each little piece of the genome has its own unique bit of history and goes to a unique ancestor as you go further and further back," explained John Novembre, a population geneticist at UCLA.
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