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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

SUMMIT COUNTY, Ohio — A former student who had a child with his teacher in 2015 filed suit Monday against Akron and Tallmadge school officials for failing to stop the abuse.The suit also listed former teacher Laura Lynn Cross as a defendant.The suit states that administrators failed to “prevent adult Laura Lynn Cross from sexually abusing, assaulting, and raping the Plaintiff, a student and a minor.”Cross served prison time at the Ohio State Reformatory for Women in Marysville after having been convicted of three counts of sexual battery. She has since been released from prison.Cross resigned from her teaching position in 2015 following allegations of sexual abuse of a student. According to an investigation by Scripps station WEWS in Cleveland, Cross convinced the student’s mother to allow him to move in with her through a court-approved “partial parental custody” arrangement.RELATED: 910

Special counsel Robert Mueller's search warrants in his investigation of Michael Cohen will be made public with redactions on Wednesday, a federal judge ordered Tuesday.The five warrants in total encompass the searches the special counsel conducted between July and November 2017 of Cohen's emails and other content related to his email accounts, the order said.Chief Judge Beryl Howell issued the order in response to a lawsuit by CNN and other media outlets seeking the release of the court records.There will be some redactions to these documents when the Justice Department makes them public, similar to the redactions made to Cohen search warrants in New York federal court. The redactions will keep secret ongoing investigation details and the identities of people who haven't been charged.Four of the five special counsel's office warrants were referenced in the previously unsealed Cohen documents in New York.Howell told the Justice Department it would need to update her by late August at the latest regarding whether the redacted parts of the warrants should stay under seal. 1098

TAMPA BAY, Fla. — A Florida man will paddleboard 300 miles through the Everglades to raise awareness for veteran suicides.Joshua Collins will race in the Everglades Challenge on Saturday. It will take him across Florida's Gulf Coast and through the Everglades before ending in Key Largo.Collins, with 313

Researchers have successfully eliminated HIV from the DNA of infected mice, a promising step toward a cure for the nearly 37 million people living with the virus.In a study published Tuesday in 205

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