Lascar volcano, which sits in the Andes, rumbled into action on Saturday, triggering minor earth tremors. No damage in the surrounding area has so far been reported, but an initial green warning was raised to yellow. Chile's National Geology and Mining Service (Sernageomin) defines "yellow" as meaning a volcano is unstable. Despite the giant cloud of smoke that Lascar emitted - comprising volcanic ash and hot gases - no homes are thought to have been damaged. Authorities have set up a no-entry perimeter 5km from the volcano's crater. Lascar, in the north of the country, is 70km from San Pedro...