YES WE KHAN! Sal Khan says he'll let teachers post their videos and create knowledge maps--essentially their own paths--on his site, reports KQED Mind/Shift's Tina Barseghian. Money quote: "'We have all these fancy tools and modules we're building that are just supporting my videos. Why can't it support someone who's teaching a different language, or quantum physics, or gender studies,' he said." That kind of largesse is prompting some folks to call Khan the "Andrew Carnegie" of our generation.