Ricin is a natural, highly toxic compound that is a byproduct of processing castor beans. If inhaled, injected or ingested, less than a pinpoint of ricin can kill a person within 36 to 48 hours due to ...

ALEXANDRIA, Va. — A Vienna man has pleaded guilty to possession of unregistered ricin on Wednesday. Ricin is a toxin that's naturally found in castor beans, according to the Centers for Disease ...

I was looking at the delightfully spiky fruit of a castor bean plant recently, and speaking to the horticulturist who grows them where I work at Washington State University. Castor bean plants are an ...

February's Weed of the Month is about the poisonous ornamental plants that may be found growing in Minnesota community gardens. Some poisonous plants commonly grown in gardens have specific parts ...