Danna Freedman, the F.G. Keyes Professor of Chemistry at MIT, and Moriba Jah, a Martin Luther King Jr. Visiting Scholar, have been named recipients of a 2022 MacArthur Fellowship. Often referred to as “genius grants,” the fellowships come with a five-year, $800,000 prize, which recipients are free to use as they see fit. Freedman, who found out about the award in early September, before it was publicly announced, said she was “completely in shock” after hearing that she had been chosen for the fellowship. “There are so many parts of…