A Google News Help thread reports on a confirmed Google News bug where blank or black images show up in the search results.
For example, a search for letsrecycle in Google News returns a result with an image that looks like this:
Google has confirmed the issue in the thread and said:
This is something that we see from time to time. It's usually temporary, but let us know  if you keep seeing it.
They seem to be aware of the bug, but not too keen on fixing it any time soon.
Forum discussion at Google News Help.