In medical news, the U.S. pharmaceutical giant Johnson & Johnson knew for decades that some of its talcum powder contained dangerous levels of asbestos, but covered up its findings about the deadly carcinogen. That’s according to an investigation by the Reuters news agency, which found documents showing the company knew about traces of asbestos in some of its baby powder as early as 1971. The news sent share prices of Johnson & Johnson plunging by 10 percent on Friday. The report came as Johnson & Johnson faces thousands of lawsuits claiming its talcum powder led to cancer.