TED Talks We worry that IM, texting, Facebook are spoiling human intimacy, but Stefana Broadbent's research shows how communication tech is capable of cultivating deeper relationships, bringing love across barriers like distance and workplace rules.

TED Theme The six Talks in this Theme look at compassion, the best idea humanity's ever had. Leaders from many faiths, writers and scholars examine the common theme of most world religions and moral codes: Do unto others as you would have them do unto you. ...

Well, in the comments on the website, there's been a lot of meticulous debate about whether or not you can actually see the Great Wall of China from the moon. (Laughs) It's a saying. The saying doesn't have the full power if you don't use the actual language that it normally comes with. ...

TED Talks The euphonium, a tuba-like musical instrument, is rarely heard outside of traditional brass bands. Young euph prodigy Matthew White uses hip-hop rhythms and a wild new vocal technique to bring a fresh sound to this underappreciated horn.

TED Talks The world turns on symmetry -- from the spin of subatomic particles to the dizzying beauty of an arabesque. But there's more to it than meets the eye. Here, Oxford mathematician Marcus du Sautoy offers a glimpse of the invisible numbers that marry all symmetrical objects.