Former US vice-president and environmental activist Al Gore was hosted by Maropeng, the official visitor centre of the Cradle of Humankind, during the IBM Smarter Planet Conference this past week. Gore was the guest of honour at the conference, which presented software solutions for a smarter planet.

Gore, who is also known for his award-winning documentary on global warming, An Inconvenient Truth, delivered the keynote address on Thursday.

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Former US vice president and environmental activist Al Gore, photo by Severin Nowacki courtesy World Economic Forum.

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IBM guests at the entrance to Maropeng, where the Smarter Planet Conference was held.

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IBM banners on the Maropeng entrance columns welcome guests to the conference.