Archaeologists stumble on rare remains of Roman soldier 'turned to glass' by Vesuvius / Scholars debunk myth of Roman settlement in China after DNA tests, doubt still draws tourists / 'I hunted with archaeologists for lost Roman fort and harbour - here's what we found' / Archaeologists unearth 'extremely rare' Roman artefacts in staggering new discovery / Amateur archaeologist discovers bizarre Roman object that has baffled for centuries