||Low temperature on a large scale. The 27-kilometre
underground ring at CERN is now being equipped with new technology
for CERN's next major physics machine, the Large Hadron Collider (LHC).
The LHC will use superconducting magnets cooled by superfluid helium
at 1.9 degrees above absolute zero, making it the coldest locality
in the world, and even the Universe. The cover shows an artist's impression
of a temperature map representing the LHC ring superimposed on an
aerial view of the terrain around CERN.