10 Important Facts About Climate Change Worth Sharing

There has been a lot of interest this week about the science of climate change. We've rounded up 10 of the most important factoids about climate change — some may surprise you. Share these with your friends on social media and spread the word about this critical issue. 

Staghorn coral was once one of the most abundant corals on Caribbean and Floridian reefs. Today, after severe losses due to coral bleaching and disease, it is listed as a threatened species. The Nature Conservancy is working with Ken Nedimyer to grow this species in his underwater nursery (Photo © Tim Calver).

97 percent: The percentage of scientists who agree that warming trends over the past century are very likely caused by human activity.

1950: Year when atmospheric CO2 levels broke records from the previous 400,000 years, sharply rising and continuing to grow.

6.7 inches: Rise in global sea levels over the last century. The rate of rise has doubled in the last decade.

16: Number of record-breaking hottest years since 2000. 2016 was the hottest year yet. 

1.5 degrees: The average worldwide temperature increase in Fahrenheit compared to a century ago.

Nick Gutierez wets down the grass and needles along a fire line in Okanogan County. (Photo © John Marshall).  

400 parts per million: Average concentration since 2016 of CO2 in the atmosphere, compared to 275 PPM for past 400,000 years.

21: Average annual number of wildfires in Central and Eastern Washington — up from an average of six per year in the 1970s.

19th century: When the heat-trapping nature of CO2 was first demonstrated.

30 percent: The increase in acidity of the world's oceans.

$180 billion: Estimated economic losses to the United States by end of the century if no action is taken on climate change.

Sources: NASA, Environmental Protection Agency

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