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Isaacman also highlighted a push to rebuild NASA's workforce, shifting some key roles from contractors — who today make up about 75 percent of the agency's technical labor — back to in-house expertise. NASA leaders say that will give them more control over launch preparations, as it did in the Apollo and space shuttle eras.

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Each moment of horror is a fragment of the destruction wrought by an atmospheric machine-gun that in recent weeks has fired storm after storm at the western Mediterranean. Scientists do not know if climate breakdown helped pull the trigger, but research suggests it loaded the chamber with bigger bullets.