SCIENCEglobal
Scientists solve 12,800-year-old climate mystery hidden in Greenland ice
Single source
Updated 3 hours ago
First seen March 20, 2026 14:00:50Stay on top of this story
Follow the names and topics behind it.
Add this story's key topics to your watchlist so LyscoNews can highlight related developments and future matches.
Create a free account to sync your watchlist, saved stories, and alerts across devices.
Quick Summary
A mysterious spike of platinum buried deep in Greenland’s ice has long fueled theories of a catastrophic comet or asteroid strike 12,800 years ago—possibly triggering a sudden return to icy conditions known as the Younger Dryas. But new research points to a far less dramatic, yet still powerful culprit: volcanic eruptions. Scientists found the platinum signal doesn’t match space debris and actually appeared decades after the cooling began, ruling out an impact as the trigger.