The
shale
sector
could
account
for
up
to
half
of
North
America’s
natural
gas
production
by
the
end
of
the
decade,
according
to
one
source,
while
the
US
Energy
Information
Administration
predicts
that
half
of
the
natural
gas
produced
in
the
US
will
be
from
unconventional
sources
by
2030.
Shale
gas
production
in
the
US
and
Canada
could
also
play
a
political
role,
by
helping
prevent
Russia
and
Middle
East
nations
pursue
higher
prices
for
gas
exports
to
Europe,
according
to
a
study
by
the
Baker
Institute
of
Public
Policy
at
Rice…