Charges of sending ricin-laced letters to President Barack Obama and others were dropped Tuesday against an Elvis ...

BURLINGTON, Vt. (AP) — A retirement community resident made ricin and tested the deadly toxin on her neighbors by putting it on their food or in beverages over a period of weeks, investigators said.

About one million tons of castor beans are processed every year, worldwide. Ricin is part of the waste from the beans when castor oil is made. Sometimes this is called “mash.” Less than a pinpoint can ...

WASHINGTON - JANUARY 12: U.S. Sen. Roger Wicker (R-MS) (R) speaks as Senate Minority Leader Sen. Mitch McConnell (R-KY) (L) listens during a news conference on Capitol Hill January 12, 2010 in ...

Jason Kale Clampit, 44, was sentenced for possession of ricin, which he had made to set traps for trespassers, prosecutors said. By Johnny Diaz An Arkansas man who produced jars of the lethal poison ...

Add Yahoo as a preferred source to see more of our stories on Google. A Marine Corps veteran who authorities said tried to fake his own death after a falling out with a Virginia-based militia group ...

Ricinus communis, a perennial flowering plant native to East Africa and India, appears innocuous at first glance. The wide-leafed plant’s two-meter stalk bears a large seed, deceptively known as a ...

Ricin is back in the news with reports that envelopes suspected of containing the poison were sent to the White House and top defense officials. A preliminary analysis showed the substance was castor ...

WASHINGTON - JANUARY 12: U.S. Sen. Roger Wicker (R-MS) (R) speaks as Senate Minority Leader Sen. Mitch McConnell (R-KY) (L) listens during a news conference on Capitol Hill January 12, 2010 in ...