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
In his first television interview with an American broadcaster, Miguel Diaz-Canel says revolutionaries don’t give up and step down
The Cuban president, Miguel Diaz-Canel, said he would not resign under US pressure in his first television interview with an American broadcaster, while Russia insisted it would never abandon or betray its ally.
Diaz-Canel told NBC News on Thursday: “We have a free sovereign state, a free state. We have self-determination and independence, and we are not subjected to the designs of the United States.
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