Afterwork phone calls or Zoom hangouts with family and friends -- or even your therapist -- have become a crucial part of how we stay connected and sane during the Covid-19 pandemic. But for 30 ...

When people are communicating in sign languages, they also move their mouths. But scientists have debated whether mouth movements resembling spoken language are part of the sign itself or are ...

Mohamed Baghdady leans to the microphone and says the word "one." A lone mechanical finger on the table responds with a curl, then rises upright. At another table in The Citadel engineering lab, a ...