Invasive species that are introduced into non-native environments threaten ecosystems, wildlife, and human well-being.

In the spring, one will hear migrating sandhill cranes above the Rio Grande before they can be seen against the hazy sky. Watch long enough, however, and you will see the flocks swirling higher and ...

Fishing duo Cole & Jay find themselves in the middle of a biological event as they are completely surrounded by green tree frogs in the swamp. Trump threatens Netflix with ‘consequences’ over rice ...

Copyright 2026 The Associated Press. All Rights Reserved. Copyright 2026 The Associated Press. All Rights Reserved. Add AP News on Google Add AP News as your ...

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 ...

Epibatidine, the highly potent toxin Britain has linked to the death of Alexei Navalny, is reportedly 100 times more powerful than morphine. This extremely toxic, nicotine-like compound originates ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

see more of our stories on Google. Add Axios on Google A man holds a candle and a photo of Russian opposition leader Alexei Navalny at a makeshift memorial in 2024. Photo: AFP via Getty Images ...

Putin arch-rival Alexei Navalny died after being poisoned with a lethal toxin and Russia is to blame for the attack, Britain and its European allies have said. In a dramatic press conference held at ...

The most notorious poison associated with dart frogs is batrachotoxin. In a shocking twist, the mysterious poisoning of Alexei Navalny has been linked to a toxin so potent it's used by indigenous ...

Five European countries – the United Kingdom, France, Germany, Sweden and the Netherlands – have accused Russia of using a toxin from poison dart frogs to kill Kremlin critic Alexey Navalny. The ...

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 ...