We used to use email, the phone or talk in person. Now we use platforms like iMessage, WhatsApp or Slack to coordinate a night out with friends, a kid’s birthday party, a work project or even to discuss sensitive military information — as U.S. Defense Secretary Pete Hegseth did by sharing details of airstrikes in a Signal chat.
Last summer Greg met Lucy, now in her 20s, for the first time.
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In the Air Force, she stood out from the crowd and was selected to join the astronaut programme. She was to fly Space Shuttles - Nasa's reusable "space planes".