For some reason, the Drupal news aggregator simply does not like the fancy Feedburner RSS URL offered on Open Access News offered as a substitute for the Blogger Atom feed (Drupal will not read Atom feeds). So I created a new one using Feedburner that is the more traditional RSS 2.0.

For those also struggling with Feedburner and Drupal, when creating a Feedburner URL from an an ATOM feed, on the Feed Service Details page, check only the Convert Format Burner box and use Show Details to set it to "RSS 2.0." It's that simple :)