Heat From Crowded Metro Stations to Be Harnessed By New
Apartments Above-GroundS  Underground metro stations are
inhumanely warm come sun or rain, so it makes sense for builders
of a new housing estate in Paris to want to draw from that
energy, harnessing it for 17 apartments' heating systems above-
ground.  It's not just heat from the trains which can be used
for generating heating "upstairs"—according to Planet Ark, each
passenger expels 100W of energy down there on the platforms.
Even in the morning crush, that's a heck of a lot of energy,
which can be routed up from the metro station into the building
through an existing staircase—meaning the structural design of
the station won't have to be altered, only heat exchangers and
pipes added. It's expected to be finished by next year, so if
any Parisian readers are looking for new accommodation near the
Pompidou museum, hit up the relevant real estate agency. [Planet
Ark via Inhabitat]