Climate change is something we hear about almost every day, but what makes scientists so confident that it’s happening? According to NASA, the answer lies in decades of evidence collected from around the world—and even from space. By studying everything from ice cores and tree rings to satellite images and weather records, scientists have pieced together a clear picture: Earth is warming, and human activities are the main reason why.
The signs of this warming are becoming harder to ignore. Average global temperatures have risen by about 2°F (1°C) since the late 1800s, glaciers and ice sheets are melting, sea levels are rising, and the oceans are storing more heat than ever before. Carbon dioxide levels have also increased dramatically since the Industrial Revolution, largely because of burning fossil fuels like coal, oil, and natural gas.
What stood out to me most was that no single measurement tells the whole story. Instead, scientists rely on many different sources of evidence that all point to the same conclusion. It’s like putting together a giant puzzle—each piece adds to our understanding, and together they reveal the bigger picture. Whether you’re passionate about protecting the environment or simply curious about the science, NASA’s evidence shows why climate change is one of the most important challenges our generation will face.
Source: Evidence – NASA Science https://share.google/Kmb0mydiQjkv0eu2F
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