1. Wikidata in Science Etherpad:
https://etherpad.wikimedia.org/p/lMMLLyXsLc
2. Wikidata key points Online since January 2013 All data is
CC-0 (aka public domain) ~18 million items with ~60 million
statements (English Wikipedia: ~5 million articles) ~8% (~1.4
million) items do not have links to Wikipedia; knowledge that
exists exclusively on Wikidata