Intermediate Word:  euchre -  (a) to slyly deceive  (b) arthritic deformity  (c) clipping another rider in polo  (d) 
Difficult Word: - kauri  (a) strong, creamy Turkish coffee  (b) New Zealand conifer  (c) related to the jerboa  (d) Senegalese headdress

The Great UFO Debate - Space.com  The good news is that polls continue to show that between one and two-thirds of the public thinks that extraterrestrial life exists. The weird news is that a similar fraction thinks that some of it is visiting Earth. Evidence that is endlessly cited is "expert testimony." Pilots, astronauts, and others with experienced eyes and impressive credentials have all claimed to see odd craft in the skies. It’s safe to say that these witnesses have seen something.      
The shape of wings to come The shape of wings to come - New Scientist  Ever since the Wrights came up with the idea of steering in the air by bending the wing tips of their aircraft - “wing warping” - aircraft designers have dreamed of being able to alter the contours of their creations while on the move. The shape of an aircraft's tail and the length of its wings, for example, determine its flying characteristics, so being able to alter them during flight could make existing designs more versatile, and turn specialist aircraft into workhorses capable of all kinds of tasks. A rudimentary type of shape-shifting has been tried before in the form of "swing-wings".     

Synthetics drive diamond revolution

Synthetics drive diamond revolution  - CNN  From ultra-durable drill bits to semiconductors and optical instruments, industry officials say the uses for diamonds are multiplying and advances in synthetic production have opened the floodgates to ever more innovative applications. "Diamond as a material is like what steel was in the 1850s and what silicon was in the 1980s. There will be lots of uses for it in the next 50 years but there is not enough of it in the ground," said Bryant Linares, president and CEO of Massachusetts-based synthetic producer Apollo Diamond. "We have the potential to make semiconductors which can be faster, and better, than any of the existing available semiconductors," said Linares' father Robert.

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