Why doesn't my spider find body text?

[sigalizer]

Update: I also checked NY Times and FOX, and they haven't found the bodytext either, so apparently it's a systematic issue, and those few CNN articles are the outliers (for example this one).

Does anyone have any idea why this might be, and why the CNN one might be different?

Edit: The CBS one also found the bodytext everywhere (for example here), which makes me even more confused.