UCLA scientists have made little thermoelectric coolers that are only 100 nanometers wide, so small the eye can't see them on its own. They're not quite refrigerators yet, but if you have little sodas or bags of grapes, maybe reach out anyway. Plus: on the International Day of Sign Languages, we celebrate the amazing world of sign language interpreters at heavy metal concerts.
A team at UCLA has built technology into a glove that can recognize the hand movements from American Sign Language and translate those movements into spoken English in real time through a smartphone app. Plus: scientists in Australia say they can modify cotton to make its own color, without not-so-eco-friendly chemical dyes.