There is perhaps no place on Earth that better symbolizes the majesty of a world unmarred by human encroachment than the Galapagos Islands. The remote archipelago lies along the equator in the eastern Pacific Ocean, more than 600 miles off South America. The islands are relatively recent volcanic formations, the youngest of which, Fernandina, emerged from the seafloor only 700,000 years ago. As a result of an exceptional set of environmental, biological, and geological conditions, the Galapagos are home to a unique ecosystem of flora and fauna, including swimming iguanas, flightless cormorants, and giant tortoises. And, of course, it was a visit to the Galapagos in 1835 by the young British geologist and naturalist Charles Darwin that inspired his groundbreaking book On the Origin of Species, which forever changed not…