Study reveals how the evolution of a single gene allowed the plague to keep killing

As Harvard University remains the focus of the Trump administration’s ire, the fate of its international students hangs in balance, including Cleo Carney, the daughter of the Canadian Prime Minister Mark Carney. A little over a week ago, the Trump administration cancelled Harvard’s ability to enroll international students, leaving current foreign students to transfer to other colleges or risk losing their visa status. “They have lost their Student and Exchange Visitor Program certification as a result of their failure to adhere to the law,” Homeland Security Secretary...