QUANTICO, Va. — President Donald Trump on Tuesday proposed using American cities as training grounds for the armed forces, with U.S. military might being deployed against what he described as the ...

Scientists have created human eggs containing genes from adult skin cells, a step that someday could help women who are infertile or gay couples have babies with their own genes but would also raise ...

Abstract: The presence of a variety of potentially hazardous substances in the laboratory and the large number of laboratory staff on a rotating basis make laboratory staff inevitably a "high-risk ...