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
This is 21st known strike since early September as Trump officials justify efforts to stop narcotics from entering US
The United States conducted another attack on an alleged drug trafficking boat in the eastern Pacific on Saturday, killing three people aboard, the Pentagon said on Sunday.
“Intelligence confirmed that the vessel was involved in illicit narcotics smuggling, transiting along a known narco-trafficking route, and carrying narcotics,” the US Southern Command announced in a post on social media.
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