When Amazon released Alexa in 2014, the company had big dreams for the technology. The voice assistant, the company suggested, could succeed smartphones as..
With questions swirling about the utility of voice assistants, we asked readers how they use one of the most popular, Amazon’s Alexa. Here’s what they answered.
For adults, vaccines proved to be safe and powerfully protective in clinical trials and were speedily authorized for use. But the trials in children were complicated by the arrival of virus variants.
The F.D.A. temporarily halted efforts to authorize the Pfizer-BioNTech vaccine for young children amid several unexpected findings. The coming weeks should bring clarity.