It is difficult to imagine what the earth would have looked like in the years before life began. Geological investigators have now found more evidence that it was different than the planet we live on today. According to a new analysis of the features of the Earth’s crust over its …
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The natural world has undergone an almost unimaginable regime change, reflecting the vast and growing dominance of humanity on our planet’s most important resource: freshwater. Researchers say this is the first global survey of human effects on the water cycle. Scientists have used NASA’s satellite measurements to remotely measure the …
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In April 1990, our universe opened up to us in a whole new way. At the same time that the Hubble Space Telescope was launched and deployed, the most powerful space telescope ever was built. Although the tool started out with difficulty, Hubble has been in operation for a full …
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