Curtin University researchers use innovative techniques to date three-billion-year-old impact crater in Pilbara region A meteorite that struck Earth three billion years ago left behind a “smoking gun” – evidence of the world’s oldest impact crater in a remote part of Australia. Ancient rocks in Western Australia’s Pilbara region record the event, which occurred during the Archean eon, a period 4 to 2.5 billion years ago, when tectonic plates were beginning to form and early life emerging. Continue reading... from The Guardian https://ift.tt/vFNkr3E via IFTTT
Unions condemn ‘insensitive’ internal cybersecurity test sent to healthcare workers in Newfoundland and Labrador For years, healthcare staff in the Canadian province of Newfoundland and Labrador have felt overworked and underappreciated. Turnover, burnout and thinning resources were pushing workers in the sector to a breaking point. So when the email titled “June Holiday” arrived in thousands of inboxes, they felt a moment of overdue joy. Continue reading... from The Guardian https://ift.tt/UFrzXsg via IFTTT