Peter Rothman @peter active 6 years, 1 month ago ActivityProfileFriends 0Groups 1ForumsDocs PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates Friendships New Groups Group Memberships Group Updates Topics Replies Posts Comments Topics Replies New Docs Doc Edits Doc Comments Peter Rothman joined the group H+ Scientists Network 6 years, 7 months ago