U.S. President Joe Biden on Sunday urged China to "act more responsibly" on human rights, underscoring concerns over the treatment of the Muslim Uyghur minority in Xinjiang, and expressed doubts over Beijing's explanation of the coronavirus' origin.Biden said at a press conference after a Group of Seven summit in Cornwall, southwestern England, that he and other leaders shared concerns over China's lack of transparency."We haven't had access to the laboratories to determine whether or not -- and I have not reached a conclusion because our intelligence community is not certain yet -- whether…READ FULL ARTICLE