TODAY 3rd Hour: Decoding the dark side of social media. Surfer bringing diversity to the sport. Biggest rooftop garden in Paris.

<p>As part of our series “The Social Challenge,” we’re decoding some common social media terms and what they mean may shock you. Plus, meet the woman behind the non-profit organization “Los Courage Surf Camps” who is opening up the sport to a whole new group of people. Also, inside the biggest rooftop garden in Paris that could offer a glimpse into the future of how we get our food.</p>