Ricin, a poison found in castor beans, has been found in a package sent to President Donald Trump – the latest example of the natural and deadly toxin being investigated by authorities.

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 ...

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 ...

Ricin is a poison that can be made from the waste left over from processing castor beans. It can be in the form of a powder, a mist, or a pellet, or it can be dissolved in water or weak acid.

Ricin is back in the headlines. Several vials of the deadly toxin turned up last week in a Las Vegas hotel room, along with firearms, a text book about anarchy, and castor seeds, which are used to ...

Deadly plants like ricin-producing castor beans and poisonous nightshade have been used by assassins and spies for centuries.

BURLINGTON, Vt. -- 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.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Update: On October 2, 2018, news outlets reported that envelopes ...

Roger Wicker and another addressed to President Obama, have been been intercepted and tested positive for the poison ricin. Authorities say they see no connection between the suspicious letters ...

The deadly toxin ricin is behind attacks on high-profile officials once again, this time in letters addressed to President Obama and New York City Mayor Michael Bloomberg. This isn't the first ...

Editor’s Note: Peter Bergen is CNN’s national security analyst, the author of “Manhunt: The Ten-Year Search for bin Laden – From 9/11 to Abbottabad” and a director at the New America ...

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 ...