Chisako Kakehi, a 78-year-old death-row inmate known as a “black widow” who was convicted in serial murders using hydrocyanic acid in western Japan, died at the Osaka Detention House on Thursday, the ...

The roots of the bitter variety contain a cyanogenetic glycoside, linamarin, which is hydrolysed to glucose, acetone and hydrocyanic acid by the enzyme linase.

sulfuric acid, DDT and, after 1929, Zyklon-B (hydrocyanic acid) - the same gas used in the Holocaust's death camps. From our morning news briefing to a weekly Good News Newsletter, get the best of ...