>> http://www.bbc.co.uk/news/science-environment-15017484

It doesn't violate anything we think we know if the Neutrinos have a
negative rest mass, as has been suggested long before now.

Quite what the meaning of negative rest mass is is TBD - especially
for a "particle" that never rests. Photons live in a timeless
continuum of eternal now. Negative rest mass neutrinos would live in
an eternal world of "where will I have put my keys".

            Russell
--=20
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