My K-Meleon renders this page (http://www.nature.com/nsu/020429/020429-7.html) wrong... the text over rights part of the image... I tried the page with IE and it worked right... not sure why?
Gentlemen, if you peek at the code then you see that table, in which the particular image is, is set to 120px width. However, the image itself is 180px wide. What other browsers do is that they override the 120px table width in order to hold the pic. Mozilla (and KM respectively), however, honours the table width and keeps it the way it should be.
It's coding error (would YOU try to put big box inside smaller one? I wouldn't), our little browser can't be blamed here.