Thomson Reuters’ has released data on the composition of the new Emerging Sources Citation Index (ESCI) which was added to Thomson Retuers’ Web of Science bibliographical database on 8 November 2015. 45% of the ESCI is from European sources; 17% is from North America and 16% is from Asia Pacific. The database is part of the Web of Science, accessible via this EUI Catalogue record. The new ESCI increases Web of Science coverage by providing bibliographical data from peer-reviewed journals “of regional importance and in emerging research fields… ESCI will make important regional content visible.” Thomson Reuters offers a webcast on ESCI on Tuesday, December 8, 2015 at 10:00 GMT.