On OS X Safari, the articles are in Georgia 13, but the subpixel rendering is disabled. The result is ghastly. The type appears randomly weighted and poorly kerned.
If you copy a paragraph and paste it into TextEdit you can see the same text still in Georgia 13 without broken rendering.
You can use the assistive zoom to see clearly what is going on. (Hold control and "two finger up" on the trackpad, or scroll wheel up if you are that sort.) The color fringe at the edges of the zoomed letters is the subpixel rendering.