November 20, 2009 6:42 pm Gravity Is a Green Thing Even though skateboarding is and eco-friendly mode of transportation, one man hopes it can go even greener. Story provided by Channel 4 San Diego. US & World Videos 2:39 Police clear out pro-Palestinian encampment at UC San Diego; dozens arrested 1:20 Gigi Hadid wows in sweeping Met Gala look 1:34 Nicole Kidman floored over Olivia Rodrigo's AMC ad tribute 1:12 Ariana Grande channels Glinda at 2024 Met Gala 1:24 Jalen Brunson leading Knicks: ‘Orange and blue skies in NYC'