The northern lights dance over the Knik River near Palmer, Alaska. Activity on the surface of the sun creates this natural light show, but severe solar storms could devastate Earth's power and water utilities, and knock out communications.
A 60-mile-long iceberg known as B9B, right, crashes into the Mertz Glacier Tongue, left, in the Australian Antarctic Territory on Saturday. The collision created a new 48-mile-long iceberg.
AP Photo/Commonwealth of Australia
When it comes to climate change, some look at the facts presented and see a coming catastrophe, others see a hoax. This difference in interpretation, social scientists say, has more to do with each individual's existing outlook than the facts.