Galapagos National Park ranger Marco Paz shows calandrinia galapagosa plants at a nursery of endemic plants, which are in risk of extinction, at Cerro Colorado, in the southwest of Puerto Baquerizo Moreno, San Cristobal island, Galapagos, Ecuador on June 4, 2013. Paz is participating in an endemic plant reforestation program to restore the ecosystem of the island.  AFP PHOTO / RODRIGO BUENDIA (Photo by Rodrigo BUENDIA / AFP)        (Photo credit should read RODRIGO BUENDIA/AFP via Getty Images)