From HEPfeickert http://status.hackerposse.com/url/16917 on Twitter: A reminder that the PDG 2020 is available for pre-order! Physicists, order your updated particle book! We did a lot of good work in the last 2 years, and if for not other reason then having a reminder of that in your backpack go get it. :) #PDG2020 http://status.hackerposse.com/url/23084 http://status.ha…