Could a Cyanide-Laced Letter Have Harmed Obama?

A package that was sent to the White House and tested positive for traces of cyanide likely would not have harmed anyone, scientists say. Though cyanide is a deadly poison, this particular attack was unlikely to have sickened anyone, said Hamish de Bretton-Gordon, a chemical-weapons expert with SecureBio, a chemical, biological, radiological and nuclear (CBRN) security firm based in the United Kingdom. That's because the form the cyanide likely came in — a white, powdery substance called sodiu