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
Research suggests every extra step up to 10,000 reduces risk even if rest of the day is sedentary
Walking up to 10,000 steps a day lowers the risk of heart disease and early death, even when spending the rest of the day sedentary, research suggests.
The study, published in the British Journal of Sports Medicine, found that every extra step above 2,200 steps a day – up to about 10,000 – reduces these risks, regardless of how much of the remaining time is spent sitting.
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