NOAA

Climate Change

Carbon dioxide levels hit 50% higher than preindustrial time

The annual peak of global heat-trapping carbon dioxide in the air has reached another dangerous milestone: 50% higher than when the industrial age began. And the average rate of increase is faster than ever, scientists reported Monday. The National Oceanic and Atmospheric Administration said the average carbon dioxide level for May was 419.13 parts per

Climate Change

America’s new normal: A degree hotter than two decades ago

America’s new normal temperature is a degree hotter than it was just two decades ago. Scientists have long talked about climate change — hotter temperatures, changes in rain and snowfall and more extreme weather — being the “new normal.” Data released Tuesday by the National Oceanic and Atmospheric Administration put hard figures on the cliche.

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