This is part of the "From Around the Web" page that appeared on CNN at approximately 6:00 PM central time on 8 August 2013.
The link actually goes to a blog post from Ancestry.com that discusses how George Clooney is related to President Lincoln--the article never says that Clooney is descended from Lincoln. President Lincoln has no living descendants.
I'm not certain who wrote the headline in the link above but it's misleading and actually, incorrect.