indian engineer

For the past 30 years, he has been studying the composition and chemistry of the atmosphere and has published more than 220 scientific papers and a textbook on the subject.

Alexa was launched in 2014 alongside the smart speaker, Amazon Echo, which promised to be a dutiful virtual assistant.

Here's the story of how the efforts of two Indian engineers — Arun Mehta and Vickram Crishna — helped Stephen Hawking get his voice back.