Environment

cad14852408b6a0d500f6a706700778c.jpg

A security guard patrols the earthquake ravaged Duty Free Zone of Iquique, in Iquique, Chile, Friday, April 4, 2014. Following a magnitude-8.2 earthquake early in the week, soldiers have kept a close watch on supermarkets and gas stations to prevent looting as many people continued to line up on Friday for gasoline, water and food. The city remained largely peaceful and no new major damage or casualties were reported from the continuing aftershocks that have rattled the sleep-deprived citizens of Chile's north. (AP Photo/Luis Hidalgo)

caf4cbdc408a6a0d500f6a7067006edd.jpg

A security guard patrols the earthquake ravaged Duty Free Zone of Iquique, in Iquique, Chile, Friday, April 4, 2014. Following a magnitude-8.2 earthquake early in the week, soldiers have kept a close watch on supermarkets and gas stations to prevent looting as many people continued to line up on Friday for gasoline, water and food. The city remained largely peaceful and no new major damage or casualties were reported from the continuing aftershocks that have rattled the sleep-deprived citizens of Chile's north. (AP Photo/Luis Hidalgo).

5abf35e8407c6a0d500f6a706700ebb6.jpg

A woman and her newborn baby are transferred, after delivery in a Chilean Army field hospital, in Iquique, Chile, Friday, April 4, 2014. Coastal residents of Chile's far north have spent sleepless nights outside their homes as aftershocks continued following a magnitude-8.2 earthquake early in the week that damaged several thousand homes and caused six deaths. (AP Photo/Luis Hidalgo).

cbba1415407d6a0d500f6a7067009dad.jpg

Medical staff attend a birth, inside a Chilean Army Field hospital in Iquique, Chile, Friday, April 4, 2014. Coastal residents of Chile's far north have spent sleepless nights outside their homes as aftershocks continued following a magnitude-8.2 earthquake early in the week that damaged several thousand homes and caused six deaths. (AP Photo/Luis Hidalgo).

bcff6bc7407e6a0d500f6a706700bbc1.jpg

People camp out at a soccer field after a strong aftershock in Iquique, Chile, Friday, April 4, 2014. Coastal residents of Chile's far north have spent sleepless nights outside their homes as aftershocks continued following a magnitude-8.2 earthquake early in the week that damaged several thousand homes and caused six deaths. (AP Photo/Luis Hidalgo).

c2b28e9340836a0d500f6a706700907b.jpg

Preganant women wait for their turn at a delivery ward within a Chilean Army field hospital, in Iquique, Chile, Friday, April 4, 2014. Coastal residents of Chile's far north have spent sleepless nights outside their homes as aftershocks continued following a magnitude-8.2 earthquake early in the week that damaged several thousand homes and caused six deaths. (AP Photo/Luis Hidalgo).

8dee16b840a36a0d500f6a706700fc2c.jpg

People camp out on a soccer field in Iquique, Chile, Friday, April 4, 2014. Coastal residents of Chile's far north have spent sleepless nights outside their homes as aftershocks continued following a magnitude-8.2 earthquake early in the week that damaged several thousand homes and caused six deaths. (AP Photo/Luis Hidalgo).

3b46c2984055690d500f6a7067005a28.jpg

This April 18, 2008, file photo provided by the U.S. Fish and Wildlife Service shows a gray wolf. (AP Photo/U.S. Fish and Wildlife Service, Gary Kramer, File)