Following early warnings to evacuate coastal areas, thousands of Hawaiians head for higher ground - for many it isn't the

Following early warnings to evacuate coastal areas, thousands of Hawaiians head for higher ground - for many it isn't the

Wednesday's tsunami warning is bringing back memories of one of the world's worst nuclear disasters.

In 2009, the Environmental Protection Agency declared that the rising concentrations of greenhouse gases in the atmosphere threatened public health

In 2009, the Environmental Protection Agency declared that the rising concentrations of greenhouse gases in the atmosphere threatened public health

In 2009, the Environmental Protection Agency declared that the rising concentrations of greenhouse gases in the atmosphere threatened public health

Over the last six months, Americans have been inundated with a near-constant stream of announcements from the federal government —