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 ...

Poison dart frogs produce powerful toxins that act on the nervous system, making even brief contact potentially lethal. Their bright coloration serves as a warning signal, advertising danger rather ...

Russian opposition leader Alexei Navalny was killed using a deadly toxin found in poison dart frogs in South America, the UK and some of its European allies have said. Traces of epibatidine were found ...

Russian opposition leader Alexei Navalny was fatally poisoned with a toxin from Ecuadorian dart frogs that is 200 times stronger than morphine — a “despicable” killing which could only have been ...

LONDON — Russian opposition leader Alexei Navalny was poisoned by the Kremlin with a rare and lethal toxin found in the skin of poison dart frogs, five European countries said Saturday. The foreign ...

The modern poison has become less a medieval cliché than a geopolitical signature flourish. Precise, deniable, and in Russia’s case, grimly familiar. Accusations of Russian poisoning surfaced again ...

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 ...

Epibatidine, which can be secreted by Anthony's poison arrow frog onto its skin, was blamed for Alexei Navalny's death by five European nations Russian opposition leader Alexei Navalny was killed ...

LONDON (AP) — Russian opposition leader Alexei Navalny was poisoned by the Kremlin with a rare and lethal toxin found in the skin of poison dart frogs, five European countries said Saturday. The ...