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
Immigration director says green cards for people from certain countries will also be re-examined
Trump administration officials say they are undertaking a broad re-examination of asylum cases and green cards issued to citizens of certain countries, after the shooting of two national guard members near the White House in Washington DC on Wednesday.
The Department of Homeland Security (DHS) named the suspect in the shooting as Rahmanullah Lakanwal, a 29-year-old Afghan national who entered the US under a policy set up under Joe Biden after the US withdrawal from Afghanistan in 2021 and continued under Donald Trump.
Continue reading...from The Guardian https://ift.tt/eDJj6rs
via IFTTT
Comments
Post a Comment