South Africa

Tana Weingartner / WVXU

Though former South Africa President Nelson Mandela remains in a Pretoria, SA hospital, the world is celebrating his 95th birthday.

The National Underground Railroad Freedom Center is marking the occasion by continuing its "Six Words for Mandela" campaign. Guests are invited to leave words of thanks and well wishes for the man known as "Madiba." The cards will eventually be sent to Mandela's family.

You can also send messages on social media using the hashtag #6Words4Mandela.