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Since it landed on Mars in 2012 NASA's Curiosity rover has been exploring Gale Crater, a vast, dry ancient lake bed with a mountain at its center. Now, Curiosity has found sediments containing sulfate salt in the crater, which suggest it once held salty lakes.A range of salts have been found on Mars in different locations. Researchers interpret these as evidence of ancient brines. Salty water formations seemed to increase on the Martian surface as the planet transitioned to an arid climate 3.5 billion years ago.The new detection of sulfate salts came from sedimentary rocks dated to between 3.3 and 3.7 billion years ago. Curiosity has analyzed other, older rocks on Mars and didn't detect these salts in them.Researchers believe the salt is evidence of the crater's lake evaporating in the Red Planet's arid environment. They also believe studying younger rocks in the future could shed more light on how the Martian surface dried out.Gale Crater was created by an ancient impact, then filled in with sediment layers over time. Mount Sharp, the mountain at its center, was created by wind erosion of the hardened sediment layers. Those same layers act like chapters in the history of Mars and provide clues to its environment at each point in time.At the time the sulfate salts were present, lakes were probably scattered across the crater floor, fed by streams in the crater walls. Over time, the streams would overflow and then evaporate, trapped in a repetitive cycle taking place over millions of years.The findings were published Monday in the journal 1576

Rudy Arco, 57, moved from Las Vegas to Odessa after the 2017 mass shooting there that killed 58 people and injured almost 700 others, his family told CNN.Arco was one of seven killed during last Saturday's mass shooting. Arco started a trucking company after moving to Odessa, working hard to build his business, his family told CNN.He was driving home from work in his truck when he was shot.His dad was "the last person I'd ever think to go," his son Ardy Arco said, because he was "always just on his toes," and "aware of his surroundings at all times."He was a man of faith, his daughter Julie Arco said."If he said 10 words to you, five of them were about God," Julie Arco said.The family left Cuba to escape communism, his wife, Bari Arco, told CNN."And now we are in America, the best country, the best everything, and we are not safe," Bari said. "Look what happened. He was coming from work, driving his truck, and that's it. He's gone."Bari Arco said she has a message for President Trump."We want him to say that he wants Americans (to) be safe again," the widow said. 1091

TAMPA, Florida — Many people see living in Florida as the dream, which may be why 149 people move to Tampa every day, according to a Bloomberg report. 162

Still use Windows 7 on your PC or laptop? Don't be embarrassed: almost 40% of personal computers around the world still run it, according to Microsoft.But if you still use it, you need to make a very important upgrade soon.Windows 7 is now 10 years old. If you're still using it, watch for a critical update this month. 332

TAMPA, Fla. — An unknown suspect targeted a South Tampa yard sale, benefiting a good cause, with phony money. Katherine, who asked us not to share her full name, was hosting a fundraiser Saturday for her teenage niece, who is in need of a new kidney. "I love her and we did this as an effort to raise money for her so she can get the transplant and it would be less money out of her family’s pocket," said Katherine. Katherine says one man came by the yard sale and talked her down in price for a pair of designer purses and an original painting from Haiti, where she was previously deployed in the military. Turns out, a bill was bogus, handed to her in a peculiar way as to not reveal that it was counterfeit. 730