Saving Galapagos Islands

Tourist invade the Galapagos islands, threatening precious wildlife.

Galapagos Wildlife

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A Galapagos giant tortoise walks around at the Charles Darwin Research Station. The Galapagos giant tortoises can weigh up to 500 pounds and live for 150 years. It's estimated that there were 300,000 tortoises on the islands when Darwin arrived in 1835; now there are about 3,000. (Jeffrey Kofman/ABC)
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