Alexei Navalny dart frog toxin poisoning: What we know Epibatidine, found in the Ecuadoran dart frog, causes muscle paralysis and eventual asphyxiation. Experts have said the toxin can also be ...

Add Yahoo as a preferred source to see more of our stories on Google. This extremely toxic, nicotine-like compound originates from the Epipedobates genus of poison dart frogs, found exclusively in ...

The Kremlin said it had a "very negative" reaction to Western accusations that the Russian state fatally poisoned jailed opposition leader Alexei Navalny with a deadly toxin found in the skin of ...

Precise, deniable and, in Russia’s case, grimly familiar. Poison has become less a medieval cliché than a geopolitical signature flourish in recent years. Accusations of Russian poisoning surfaced ...

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 ...

Madeleine Finlay sits down with science editor Ian Sample and science correspondent Nicola Davis to discuss three eye-catching stories, including the impact of a powerful psychedelic on depression, ...

Navalny died exactly two years ago in penal camp European countries point finger at Russian state Kremlin says new allegations are 'based on nothing' Navalny's widow says truth is out, wants justice ...