Intermediate Word:  epistemology -  (a) science of identifying authors from their writing styles  (b) study of ancient writing scripts  (c) branch of philology dealing with written language  (d) theory of the nature of knowledge
Difficult Word: - tachymeter  (a) speed measurement instrument  (b) instrument for rapid measurement of distances and elevations  (c) instrument for measuring liquid viscosities by measuring their rates of flow  (d) tachometer

A disc of water ice in a Martian crater, ESA Ice lake found on the Red Planet   - BBC  A giant patch of frozen water has been pictured nestled within an unnamed impact crater on Mars. Scientists believe the water-ice is present all year round because the temperature and pressure are not sufficient to allow it to change states. Researchers studying the images are sure it is not frozen carbon dioxide (CO2), because CO2 ice had already disappeared from the north polar cap at the time the image was taken. The team has also been able to detect faint traces of water-ice along the rim of the crater and on the crater walls. The ice disc is located on a broad plain that covers much of Mars' far northern latitudes.  
Image of the object Distant object found orbiting Sun   - BBC  It is at least 1,500km (930 miles) across and may be larger than Pluto, which is 2,274km (1,400 miles) across. It might be a large, dim object, or a smaller, brighter object. Whatever it is, astronomers consider it a major discovery  In 2004 scientists discovered Sedna, a remote world that is 1,700 km across. Two groups of scientists will be claiming the latest discovery  The same team that found Sedna have designated it K40506A after it was picked up by the Gemini telescope and one of the twin Keck telescopes in Hawaii. 

Card hands (Dana)

Deceptive science What is the attraction of magic in an age of scepticism?  - BBC  Cutting edge-psychology is now being applied to this most ancient of entertainment forms, to understand how these masters of legerdemain trick the complexities of the human brain. At the vanguard of this unusual appliance of science is University of Hertfordshire psychologist Professor Richard Wiseman. As a former conjurer, he is uniquely qualified to understand the social dynamics between a magician and his audience and he argues that there is a lot more happening in a magic show than people realise. "The really good performers," he said, "the ones who know what they're doing, have an incredible grasp of psychology", and use it to convince you to see their version of events. "For example," said Professor Wiseman, "a magician might cut some cards and say 'Right, they're mixed up now'. Then he'll do something else and then say 'Now, remember I shuffled the cards at the start'. "That word - 'shuffled' - has gone in, and people think 'Yeah, that's right, the cards were shuffled'. But they weren't, he just cut them. It's cut to mix to shuffle. Small steps. If you had gone from cut to shuffle, it's too much and people notice." 

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