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
A sharply satirical attack on unevenly applied 19th-century laws to enforce religious observance still bites today Rich or Poor, or Saint and Sinner The poor man’s sins are glaring; In the face of ghostly warning He is caught in the fact Of an overt act — Buying greens on Sunday morning. Continue reading... from The Guardian https://ift.tt/sv41S7j via IFTTT