Methane emissions in Sweden’s Siljan Ring lakes are up to 300 times higher than expected, raising climate concerns. View on ...

New research in Sweden has uncovered perplexingly high methane emissions coming from the largest meteorite crater in Europe. The Siljan Ring is a prehistoric impact structure in central Sweden ...

Deep beneath the ice of East Antarctica’s Wilkes Land, scientists have identified a vast gravitational anomaly that could ...

Why it's incredible: Evidence suggests it could be the greatest known impact crater on Earth. The Wilkes Land crater is a hole in the bedrock beneath East Antarctica's ice sheet measuring 315 ...

Researchers have proposed many origins for a gravity anomaly in Wilkes Land, East Antarctica, but the latest evidence suggests the subglacial hole is an impact crater measuring 315 miles across.