Each item in PULSE is followed by a link that looks like this: comment 
Clicking on the word "comment" will open a separate window where readers can post comments on that item. The number in brackets indicates the number of comments currently recorded.
When items generate comments of sufficient interest, additional items will be added to PULSE excerpting the comments to further stimulate thought and discussion.
Please note that because this new version of PULSE was run privately for several weeks, many items will indicate  for the comments, as they were not really available for comments to be posted.