The map above illustrates the results of a new 30-year NASA study, published in the journal Nature Climate Change earlier this week (March 10, 2013). The study suggests that – of the 10 million square miles (26 million square kilometers) of northern vegetated lands – 34 to 41 percent showed increases in plant growth (green and blue). Meanwhile, 3 to 5 percent showed decreases in plant growth (orange and red), and 51 to 62 percent showed no changes (yellow) over the past 30 years.
Bottom line: Over the past 30 years, 34 to 41 percent of vegetated lands at Earth’s northerly latitudes have gotten greener over the past 30 years, according to a NASA study published March 10, 2013 in Nature Climate Change.
Deborah Byrd created the EarthSky radio series in 1991 and EarthSky.org in 1994. Today, she serves as Editor-in-Chief of this website. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named 3505 Byrd in her honor. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.