In a rainforest, small animals survive by hiding. By blending in with their environment until danger passes, many unique ...

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 ...

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 ...

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 ...