When the mercury's rising in your thermometer, it may also be rising in the ocean.
According to a new study published Feb. 5 in the journal Geophysical Research Letters, there
may be more than 15 million gallons (58 million liters) of mercury buried in the permafrost of the Northern Hemisphere — roughly twice as much mercury as can be found in the rest of Earth's soils, ocean and atmosphere combined. And if global temperatures continue to rise, all that mercury could come pouring out. For more information click on image.