Paradox-free time travel is “logically” possible, say physicists
Scientists discover animal that doesn’t need oxygen to live 
Axolotls can regenerate their brains 
cloned arctic wolf
World’s first cloned arctic wolf is now 100 days old
Identical twins were raised in different countries. Here’s how they differ today.
When remains are found in a suitcase, forensics can learn a lot from the insects trapped within
1.7 billion years ago, Earth had a natural nuclear reactor
Meta can (kinda) guess what you’ve heard via your brain waves 
The true meaning of Einstein’s most famous equation: E=mc²
Dolphins use signature whistles to represent other dolphins – like names