A giant meteorite boiled the oceans 3.2 billion years ago. Scientists say it was a ‘fertilizer bomb’ for life
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A massive space rock, estimated to be the size of four Mount Everests, slammed into Earth more than 3 billion years ago — and the impact could have been unexpectedly beneficial for the earliest forms of life on our planet, according to new research.
Typically, when a large space rock crashes into Earth, the impacts are associated with catastrophic devastation, as in the case of the demise of the dinosaurs 66 million years ago, when a roughly 6.2-mile-wide (10-kilometer) asteroid crashed off the coast of the Yucatan Peninsula in what’s now Mexico.
But Earth was young and a very different place when the S2 meteorite, estimated to have 50 to 200 times more mass than the dinosaur extinction-triggering Chicxulub asteroid, collided with the planet 3.26 billion years ago, according to Nadja Drabon, assistant professor of Earth and planetary sciences at Harvard University. She is also lead author of a new study describing the S2 impact and what followed in its aftermath that published Monday in the journal Proceedings of the National Academy of Sciences.
“No complex life had formed yet, and only single-celled life was present in the form of bacteria and archaea,” Drabon wrote in an email. “The oceans likely contained some life, but not as much as today in part due to a lack of nutrients. Some people even describe the Archean oceans as ‘biological deserts.’ The Archean Earth was a water world with few islands sticking out. It would have been a curious sight, as the oceans were probably green in color from iron-rich deep waters.”
When the S2 meteorite hit, global chaos ensued — but the impact also stirred up ingredients that might have enriched bacterial life, Drabon said. The new findings could change the way scientists understand how Earth and its fledgling life responded to bombardment from space rocks not long after the planet formed.
‘We barely made it out’: Californians desperately flee their homes amid raging wildfires
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Terrie Morin, 60, and her husband, Dave, were at the barber shop when they heard about a raging wildfire making headway toward their Camarillo home on Wednesday morning.
The couple were hosting two guests at the time, but because their guests worked late, Morin suspected they slept through the residence’s fire alarms.
“I run in the house, and I’m banging on the door, and they did not hear me. They were knocked out,” Morin told CNN. “Get the dog. Get out of here. You don’t have time, just get out!” she recalled telling them.
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Ten minutes later, Dave noticed sparks in their backyard. The temperature was also picking up.
“It was hot. It was so hot,” Morin recalled.
Dozens of homes in California’s Ventura County were set alight in a sweeping wildfire that burned through thousands of acres of land in just a matter of hours midweek –– prompting authorities to send more than 14,000 evacuation notices across the region.
The Mountain Fire began early Wednesday and was driven by winds gusting over 60 mph. The flames have seared through more than 20,485 acres of land, according to Cal Fire.
The families who evacuated at a moment’s notice, some who say they have now lost their homes, must deal with other losses that can also be devastating, from daily essentials like medications and shoes to meaningful possessions such as sculptures and artwork, to treasured keepsakes from the birth of a child or the life of a parent.
At least 132 properties have been destroyed by the fire, while 88 have been left damaged, Ventura County Fire Department officials said Thursday evening. Ten damage inspection teams have been deployed to inspect structures along the path of the blaze.
Ten people endured non-life-threatening injuries from the Mountain Fire, which are mostly related to smoke inhalation, Ventura County Sheriff Jim Fryhoff said.
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