Intermediate Word:  arbalest  (a) crossbow-like missile launcher  (b) medieval retort  (c) type of colander  (d) love philtre 
Difficult Word: - bulbul  (a) Turkish emir  (b) African fruit tree  (c) nonsense word from Lewis Carroll's "Jabberwocky"  (d) songbird

Climate: Media's Balance Tips To Bias  - BBC  Two researchers argue, in a paper published this month in the journal Global Environmental Change, that following the norms of American journalism, U.S. media have promulgated a bias in the coverage of climate change essentially by giving too much credence to climate skeptics at the expense of the scientific consensus. Maxwell T. Boykoff and his brother, Jules M. Boykoff wrote, U.S. prestige-press coverage of global warming from 1988 to 2002 has contributed to a significant divergence of popular discourse from scientific discourse ... the prestige press's adherence to balance actually leads to biased coverage. 
Ignition Threshold For Impact Fires - SpaceDaily  Left:  The Chicxulub impact site, shown in this gravity anomaly image, is 180 kilometers (112 miles) wide. A globally distributed layer of soot indicates that the Chicxulub impact was probably near the threshold size event necessary for igniting global fires across several continents. New research indicates that impacts resulting in craters at least 85 kilometers wide can produce continental-scale fires, while impact craters more than 135 kilometers wide are needed to cause global-scale fires. (Image credit: NASA/University of Arizona Space Imagery Center)  Large impacts can blast thousands of cubic kilometers of vaporized impactor and target sediments into the atmosphere and above, expanding into space and enveloping the entire planet. These high-energy, vapor-rich materials reenter the atmosphere and heat up air temperatures to the point that vegetation on the ground below can spontaneously burst into flame.

Nanotechnology Leads To Discovery Of Super Superconductors - Space.com  University of California scientists working at Los Alamos National Laboratory with a researcher from the University of Cambridge have demonstrated a simple and industrially scaleable method for improving the current densities of superconducting coated conductors in magnetic field environments. The discovery has the potential to increase the already impressive carrying capacity of superconducting wires and tapes by as much as 200 to 500 percent in certain uses, like motors and generators, where high magnetic fields diminish current densities.   

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