Heavy methane leaks found in Swedish crater lake puzzle scientists

Berlin, Germany (SPX) Apr 14, 2025

Unexpectedly high levels of methane have been detected in Sweden's Lake Siljan, raising new questions about greenhouse gas emissions from freshwater systems. A team from Chalmers University of Technology made the discovery using a novel measurement technique, revealing unusually concentrated and persistent leaks never previously recorded in a lake setting. The findings prompt broader investigati