Expertsusinganaerialhigh-techlaserscannerhavediscoveredthousandsofancientMayastructureshiddenunderthethickjungleofnorthernGuatemala,officialssaidThursday.Some60
AgroupofdivershasconnectedtwounderwatercavernsineasternMexicotorevealwhatisbelievedtobethebiggestfloodedcaveontheplanet,adiscoverythatcouldhelpshednewlightonthe