EditorialPresident Joe Biden speaks to journalists before boarding Marine One to depart for Walter Reed Hospital where first lady Jill Biden will have a Mohs surgery procedure, on the South Lawn of the White House, Washington, on Wednesday, Jan 11, 2023. (Doug Mill
EditorialPresident Joe Biden returns to the White House without first lady Jill Biden, following a visit to Walter Reed Hospital where the first lady was scheduled to have Mohs surgery above her eye, in Washington on Wednesday, Jan 11, 2023. (Doug Mills/The New York Times)
EditorialTOPACIO. Mineral habitualmente de color amarillo, fluorsilicato de aluminio. Estructuralmente pertenece a los subnesosilicatos, r?mbico. De brillo v?treo y dureza 8 en la escala de Mohs.