[Spanish] [Ráfaga] Nº344: stress, bikes, balloons, rumsey, flags

[Jorge Sanz]

* Montgomery county bike stress map
  http://mcatlas.org/bikestress/

* NYC shared bikes service study
  http://urbica.co/citibike/

* A collection of old aerial photographs taken from balloons
  https://www.historicengland.org.uk/images-books/archive/acquisitions/

* David Rumsey Map Center opens at Stanford

http://ww2.kqed.org/arts/2016/04/15/stanfords-new-map-center-lets-you-get-up-close-personal/

* An infography about flags around the world
  http://flagstories.co/

Raf
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