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.
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.
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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Banner photo © Mac Stone