A report from the Intergovernmental Platform on Biodiversity and Ecosystem Services estimates that about one million plant and animal species are threatened with extinction. A 2019 study from Cornell’s Lab of Ornithology estimated that we’ve lost about 3 billion wild birds in North America, leaving 29% fewer than in 1970. It isn’t because birds have stopped singing, but because there are fewer of them. In recent years, though, fewer chirps, tweets, and birdsong have been heard.
Many of us associate the sound of a singing bird with the beauty of nature. Scientists use NASA data to track ecosystem changes and to develop tools for conserving life on land, in our ocean, and in freshwater ecosystems. Climate change plays an increasing role in the global decline of biodiversity-the variety of life on Earth.
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