For deaf and blind people, a robotic helping hand

Ducharme uses a product called Tatum1, a disembodied mechanical hand plugged upright into a box studded with push buttons.

Playing hip-hop or Doris Day, older exercise instructors can speak their peers’ language

So Santos began her third act as an exercise instructor. Now 72 and in her 14th year teaching at the YMCA of Greater Seattle, ...