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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

Prosecutors in New York City hit indicted singer R. Kelly with new bribery charges Thursday that appear to be related to his 1994 marriage to a teenager.A revised indictment in federal court in Brooklyn accuses R. Kelly of scheming with others to pay for a "fraudulent identification document" for someone identified only as "Jane Doe" on Aug. 30, 1994. A day later, R. Kelly, then 27, married 15-year-old R&B singer Aaliyah D. Haughton in a secret ceremony arranged by Kelly at a hotel in Chicago. The marriage was annulled months later because of Haughton's age.Defense attorney Douglas Anton on Thursday called the latest charge against his client "ridiculous and absurd."The Brooklyn prosecutors had already charged R. Kelly with racketeering, kidnapping, forced labor and sexual exploitation. They alleged he and his employees and assistants picked out women and girls at concerts and groomed them for sexual abuse.The 52-year-old singer, who is being held without bond, is scheduled to stand trial in federal court in Chicago in April on child pornography and obstruction of justice charges before facing trial in Brooklyn. 1145

So now it is reported that, after destroying his life & the life of his wonderful family (and many others also), the FBI, working in conjunction with the Justice Department, has “lost” the records of General Michael Flynn. How convenient. I am strongly considering a Full Pardon!— Donald J. Trump (@realDonaldTrump) March 15, 2020 347

Self-driving trucks carrying U.S. postal mail will soon be on roadways from Phoenix to Dallas.TuSimple, a startup based in San Diego, is the maker of the trucks that will haul mail to and from USPS facilities in the two cities, 240

Stormy weather in the East claimed at least two lives Monday night.A US Army Reserve soldier was killed and two were injured when severe weather toppled a large tree at Fort Pickett, Virginia, and an 89-year-old man was killed in the Finksburg, Maryland, area when a tree fell on his driveway, trapping him underneath.A cold front moving through the Midwest to the East Coast is bringing relief from a killer heat wave that's blanketed large parts of the United States, but leading it in are heavy rains, strong winds and thunderstorms.The elderly Maryland man was standing in his driveway when high winds from a thunderstorm brought down the tree, the Carroll County Sheriff's Office said.The soldier was taking part in a training exercise when the tree fell at Fort Pickett, the Virginia National Guard said in a 827

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