Bo­li­vian ob­ser­va­tory col­lects data as glaciers melt

StarMetro Vancouver - - CANADA & WORLD - Car­los Valdez

LA PAZ, BO­LIVIA—THE snow ap­pears to be pris­tine on the An­dean peaks that loom above Bo­livia’s cap­i­tal, but

even here ash and smog reach up to a re­mote plateau that is home to the world’s high­est at­mo­spheric ob­ser­va­tory.

It’s an ideal site for a team of in­ter­na­tional sci­en­tists who col­lect data on pol­lu­tion that has con­trib­uted to the rapid dis­ap­pear­ance of An­dean glaciers.

Re­search at the Cha­cal­taya sta­tion, which is at 5,240 me­tres above sea level, has a

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