[youtube https://www.youtube.com/watch?v=gVSYsKH2AJA&w=560&h=315%5D Above, Christine Sun Kim and Renée Hlozek share a snippet of conversation using American Sign Language and the Big Words app. Christine has been teaching Renée American Sign Language so they can communicate more directly. Renée Hlozek is a cosmologist from South Africa who studies the cosmic microwave background, radiation left over from the Big Bang. Christine […]