LOS ANGELES, April 29 (Xinhua) -- The U.S. National Institutes of Health (NIH) announced Tuesday a major new initiative aimed at advancing human-based research methods while reducing reliance on ...

众议院democrates leader哈基姆·杰弗里斯（Hakeem Jeffries）和参议员科里·布克（Cory Booker）在国会大厦的台阶上举行了持续超过 12 个小时的静坐抗议活动。表达他们对实施特朗普预算计划的反对 ...