The business end of the UEFA Champions League season officially begins this week with first leg ties in the knockout phase playoffs, with Real Madrid and reigning champions Paris Saint-Germain ...

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, ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Alexei Navalny died after collapsing while taking a walk at a Siberian prison - Moscow City Court/via AP Alexei Navalny was killed ...

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 toxin was found in the body of the Russian dissident Aleksei A. Navalny, who died in prison two years ago, five governments said, challenging Russia’s official account. By Anton Troianovski ...

Scientists once thought that a male frog dubbed Romeo was the last of his kind. Then, when more Sehuencas water frogs were discovered in 2018, they hoped he would mate with a female they called Juliet ...

Usama has a passion for video games and a talent for capturing their magic in writing. He brings games to life with his words, and he's been fascinated by games for as long as he's had a joystick in ...

It's time to play the music, it's time to light the lights: The Muppets are back on TV! But one of them might sound a little different than you're used to. A new version of "The Muppet Show" airs as a ...

Right now, molecules in the air are moving around you in chaotic and unpredictable ways. To make sense of such systems, physicists use a law known as the Boltzmann distribution, which, rather than ...

What a day, what a day. A topsy-turvy Champions League league phase wrapped up in epic fashion, as 61 goals were scored, teams went back and forth to push for winners, and we even got a goal from a ...

What a crazy Champions night that was! The final round of the Champions League group stage delivered everything once again. And with so many games, you might not have caught all the details. Check it ...