On February 1, 2003, Space Shuttle Columbia came apart somewhere over Texas, reminding us that putting people into space is hard to do and very, very dangerous. Engineers determined a piece of foam that broke off during launch had damaged the heat shield on one of the wings. NASA knew about it almost immediately and […] More »

On an outdoor patio in Kampala, observers lounge in the near-darkness, watching as an image is projected on a bare white sheet slung between two trees. In Reykjavik, a spellbound audience fills a basement bar and waits for the first slide to illuminate the wall. And in Toronto, a crowded pavilion is abuzz as the […] More »