MELAS syndrome is primarily caused by mutations in mitochondrial DNA (mtDNA), with the most common mutation occurring in the MT-TL1 gene (m.3243A>G). This mutation affects the transfer RNA for leucine ...

As Italy's Mount Etna continued to erupt, three daredevil skiers were captured skiing down the snowy slopes. Video footage shows the skiers coming down the slopes with glowing, molten lava flowing ...

A week of spectacular lava sprays on Sicily’s snow-capped Mount Etna, one of the world’s most active volcanos, has drawn thousands of people wanting to see the eruption. But the sudden influx ...