Active volcano - level 3
Mexico's Popocatepetl volcano has erupted, putting the region on yellow alert.
Nearby towns in the central state of Puebla were covered in ash as one of the world's most active volcanoes spewed heavy clouds of smoke.
50,000 residents across 24 towns are at risk from volcanic gases and lava flow, but for many it was business as usual with schools opening and locals heading to work.
Government officials have raised the alert from yellow phase one to phase three which is the third highest warning on the Mexican national civil protection centre scale.
Interesting words: ash (hot dust), spew (flow out very quickly), lava (hot melted rocks), head (go).
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