Add Yahoo as a preferred source to see more of our stories on Google. A joint report alleging that a poison dart frog toxin has been linked to the death of Russian opposition leader Alexei Navalny ...

Russian opposition leader Alexei Navalny, who died in a remote Siberian prison two years ago, was almost certainly poisoned with a deadly toxin found in South American dart frogs, five European ...

This is read by an automated voice. Please report any issues or inconsistencies here. Five European nations confirmed Russia poisoned opposition leader Alexei Navalny with epibatidine, a toxin from ...

LONDON — It is “highly likely” that Russian opposition leader Alexei Navalny was killed by a rare toxin found in poison dart frogs, five European nations said in a statement Saturday, adding that ...

A joint report alleging that a poison dart frog toxin has been linked to the death of Russian opposition leader Alexei Navalny rippled quickly around the globe among scientists. The allegations raised ...