Poison dart frogs have fascinated researchers. Now their toxin has allegedly been linked to the death of Russian opposition leader Alexei Navalny.

The tiny charismatic frog is just one of thousands. Not long ago, herpetologist and lifelong frog collector Devin Edmonds spent hours with colleagues scouring nearly 8,500 listings such as these on ...

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 ...

The modern poison has become less a medieval cliché than a geopolitical signature flourish.

By Andrew Osborn MOSCOW, Feb 16 (Reuters) - The Kremlin on Monday flatly rejected accusations from five European countries ...

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.

Russian opposition leader Alexei Navalny was fatally poisoned with a toxin from Ecuadorian dart frogs that is 200 times ...

Russian opposition leader Alexei Navalny died after being poisoned with a rare "dart frog toxin," the United Kingdom's Foreign Office said in a statement released Feb. 14. The announcement comes two ...

MOSCOW, Feb 18 (Reuters) - Russia is demanding that European countries who accused Moscow of poisoning Kremlin critic Alexei Navalny with a dart frog toxin provide concrete data to support their ...