carlos calvo

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México tiene en la mira a 49 guardiacárceles por la fuga de Joaquín "El Chapo" Guzmán

Las autoridades mexicanas han interrogado hasta ahora a 49 trabajadores de la prisión de máxima seguridad Altiplano I para buscar posibles <b>cómplices</b> …

Missing Link Microbes May Help Explain How Single Cells Became Us

Scientists have discovered a group of microbes at the bottom of the Atlantic Ocean that could provide new clues to how life went from being simple to complex.<p>"Suddenly we find something that no one has ever seen before. Some people even said that, well, maybe this organism existed but we'd never …