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时事热点二1.（2023·上海·上海中学校考模拟预测）where is amelia earhart?three theoriesamelia earhart, the first woman to fly alone across the atlantic ocean, was attempting a round- the-worldflight in 1937. she planned to land on the tiny pacific ocean island of howland. she never arrived. her fate, andthat of her navigator (导航员)fred noonan, remains one of aviation’s (航空的)greatest unsolved mysteries.researchers have spent millions of dollars investigating the case and several books have been published thatexamined different theories.the official us position is that earhart ran out of fuel and crashed in the pacific ocean. the radio log fromaus coast guard ship indicates that she must have been near howland when contact was lostanother theory says that earhart could have crashed on a different island, called nikumaroro, and died sincethe island is uninhabited.yet another theory claims she was captured while on a secret mission to the marshall islands in the northpacific and eventually returned to the us with a new identity.lost and found?the missing pilotfebruary 18, 2011amelia earhart’s dried saliva ( 唾 液 )could help solve the longstanding mystery of the aviator’s 1937disappearance, according to scientists who plan to take samples of her dna from her correspondence. a newproject aims to create a genetic profile that could be used to test recent claims that a bone found on the southpacific island ofnikumaroro is earharf s.justin long, a canadian whose family is partially funding the dna project, points out that at the moment,anyone who finds parts of bones can claim that they are earhart’s remains. according to justin long, earhart'sletters are the only items that are both proved to be hers and that might contain her dna．hair samples are one ofthe best sources of dna, but no hair samples from earhart are known. there was, in theory, a sample of earhart'shair in the international women’s air and space museum in cleveland, us. however, a 2009 study revealed thatthe sample was actually thread.the remains of earhart, her navigator noonan, and their twin-engine plane were never recovered. but in2009, a group of researchers found a bone fragment on nikumaroro that they believed might have been from oneof earhart' s fingers. however, some scientists have suggested the nikumaroro bone fragment isn’t human at allbut may instead belong to a sea turtle that was found nearby.the new earhart dna project will be headed by dongya yang, a genetic scientist at simon fraser university