Tim Costello was a labor activist with a world-wide network. He organized around contingent work and, most recently, environment and labor issues, specifically climate change as one of the founders of theGlobal Labor Strategies blog. I met him at various enviro/eco events and would see him in the food coop or walking down the street as he lived in my neighborhood. We would have short conversations from time to time and I always wished they were longer. He knew so damn much.