Altitude: 4000 meters. We find ourselves in the Andes, Perou. Up there, near the clouds, where the llamas used to graze, brown water springs from the rocks. A teacher and her pupils are samp... Read allAltitude: 4000 meters. We find ourselves in the Andes, Perou. Up there, near the clouds, where the llamas used to graze, brown water springs from the rocks. A teacher and her pupils are sampling the murky liquid in order to analyse it in the school lab. Later, from the samples, t... Read allAltitude: 4000 meters. We find ourselves in the Andes, Perou. Up there, near the clouds, where the llamas used to graze, brown water springs from the rocks. A teacher and her pupils are sampling the murky liquid in order to analyse it in the school lab. Later, from the samples, the pupils diligently extract tiny 'bugs'. And where there are bugs, there is bound to be l... Read all
