Since the early 1970s, scientists have been promoting gallium arsenide as a faster, more efficient substrate material than silicon for making integrated-circuit chips. However, the vast majority of ...

OSAKA--Thallium was detected in the comatose aunt of a man detained on suspicion of using the highly toxic substance to kill a female acquaintance, police said. Just 1 gram of thallium is enough ...

OSAKA—Police here arrested a property-rental manager on suspicion of murdering a female acquaintance by slipping a highly lethal dose of thallium into her beverage during a drinking session.