News
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AstronomyFarthest Bang: A burst that goes the distance
The most-distant gamma-ray burst ever found hails from 900 million years after the birth of the universe, around the time when stars and galaxies first flooded the universe with light.
By Ron Cowen -
ChemistryHow hot was it?
Scientists have created heat-sensing polymers that indicate exposure to high temperatures by changing color under ultraviolet light.
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ChemistryNovel reaction produces hydrogen
Chemists have found a new way to produce hydrogen using only water, an organic liquid, and a metal catalyst.
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ChemistryCactus goo purifies water
Scientists are working on an environmentally benign water-filtering process that uses the nopal cactus.