Intermediate Word:  gait (a) narrow opening  (b) admission ticket  (c) way of walking  (d) defective part
Difficult Word:
  rigadoon -  (a) butter cookie  (b) highland archer  (c) wild, skirling threnody  (d) couple's lively, jumping quickstep

'Antigravity' Propulsion System Proposed - Space.com   Dr. Franklin Felber's  new exact solution to Einstein's gravitational field equation gives hope to space enthusiasts that it might be possible to accelerate space craft to speeds approaching that of light without crushing the contents of the craft Dr. Felber's paper states that a mass moving faster than 57.7 percent of the speed of light will gravitationally repel other masses lying within a narrow 'antigravity beam' in front of it.      
Pulsed Energy Projectile - Space.com  This counterpersonnel capability projects a beam that creates a plasma pulse at the target. When the plasma pulse strikes an individual, it results in a flash-bang effect that startles and distracts, and it also has a kinetic effect on the individual's nerve sensors. US government budgets show that it received $3,173,000 in research funding. It vaporises the first thing it hits. This creates a plasma that heats the surrounding air so fast that, basically, the air explodes. The resulting shock wave will knock you to the floor.      

Image: Kangerdlussuaq Glacier

Greenland's glaciers losing ice at faster rate - MSNBC  Satellite observations indicate that Greenland's glaciers have been dumping ice into the Atlantic Ocean at a rate that's doubled over the past five years, researchers reported here on Thursday. The findings add yet another factor to the long-running debate over the effect of climate change on the world's ice sheets and sea levels. "The evolution of the ice sheet, in the context of climate warming, is more rapid than has been predicted by models," one of the researchers, Eric Rignot of NASA's Jet Propulsion Laboratory, told MSNBC.com. As a result, Greenland's ice sheet second only to Antarctica's ice sheet, with almost as much area as Mexico could contribute more than expected to rising sea levels in a warming world, he said. "This is a big, major finding," said Gino Casassa, a glaciologist at Chile's Center for Scientific Studies. He noted that some glaciers in South America's Patagonia region have been shrinking faster than expected, and said "acceleration may be the missing link."    

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