Video researcher Michael Rubinstein plays us clip after jaw-dropping clip showing how this tech can track an individual’s pulse and heartbeat simply from a piece of footage. "What you see here are small changes in the color of Steve's skin, magnified 100 times so that they become visible. We can actually see a human pulse" Watch him re-create a conversation by amplifying the movements from sound waves bouncing off a bag of chips. http://www.ted.com/talks/michael_rubinstein_see_invisible_motion_hear_silent_sounds_cool_creepy_we_can_t_decide
What can a young woman with an idea, an Internet connection and a bit of creativity achieve? That's all Siyanda Mohutsiwa needed to unite young African voices in a new way. Hear how Mohutsiwa and other young people across the continent are using social media to overcome borders and circumstance, accessing something they have long had to violently take: a voice. http://www.ted.com/talks/siyanda_mohutsiwa_how_young_africans_found_a_voice_on_twitter
Saki Mafundikwa Ingenuity and elegance in ancient African alphabets
From simple alphabets to secret symbolic languages, graphic designer Saki Mafundikwa celebrates the many forms of written communication across the continent of Africa. He highlights the history and legacy that are embodied in written words and symbols, and urges African designers to draw on these graphic forms for fresh inspiration. It's summed up in his favorite Ghanaian glyph, Sankofa, which means "return and get it" — or "learn from the past."
Murray Gell-Mann The ancestor of language
After speaking at TED2007 on elegance in physics, the amazing Murray Gell-Mann gives a quick overview of another passionate interest: finding the common ancestry of our modern languages.