This month, PPI SyEN editors are pleased to bring an edition of SyEN featuring authors from Germany, the USA, France, the Netherlands, Japan and Columbia.

This makes this month’s edition our most global yet (from the perspective of residences of contributing authors). Thank you to all our authors for contributing to this special edition.

If you would be interested in submitting an article for inclusion in an upcoming SyEN, please contact SyEN editor Ralph Young.