The Energy Information Administration (EIA) puts it at around 37tcm of recoverable reserves, two-thirds of which is shale gas and the rest tight gas and coal-bed methane.

ECONOMIST: Shale gas is giving a big boost to America��s economy

In Nauvo, the bed and breakfast Martta invites tired cyclists to rest in an old house whose interiors represent perfect archipelago-romanticism.

BBC: Island hopping in Finland