"The Last Iceberg," Camille Seaman.
Above, Oliver Sacks rehearses his talk onstage at TED2009 in Long Beach on Tuesday afternoon, before the official start of TED. Photo: Angela Cheng.
We missed this last week: Jennifer 8. Lee's hypothesis that Abraham Lincoln used emoticons:
Saul Griffith, Seth Godin, Golan Levin, Barry Schwartz and more than a dozen other TEDTalks speakers are coming to TED2009 with something new to share. We've rounded up all the talks from these returning speakers in a newly created Theme on TED.com: "Speaking at TED2009."