252 million years ago, Earth faced its worst extinction.
Now scientists have found the same chemical signals in rocks from Iran and South China, nearly 5,000 km apart.
The message is clear: the end-Permian crisis wasn’t local chaos. It was one connected planetary event.
🧪 #SciComm
How matching chemical signals in two distant ancient oceans show the end-Permian crisis was a single, connected planetary event. A team of scientists collects samples...
