Life
Some germs ride a superhighway at the edge of space
Some microbes common on Earth’s surface lead a secret double life. Soaring higher than jumbo jets, they carry clues about disease spread and alien life.
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Chemistry
Scientists Say: Pyrolysis
This oxygen-free “burning” reaction explains why charcoal can burn, but typical campfire soot cannot.
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Oceans
Analyze This: Even as Earth’s oceans warm, one spot has gone cold
A cold blob of water in the North Atlantic suggests that an important ocean current is weakening.
Experiments
Humans
Experiment: Discover the science behind afterimages
By observing afterimages, you can learn how different cone cells in the retina respond to various colors.
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This microbe turns into a ‘Hulk’ that eats its own kind
The shape-shifting transformation of Euplotes gigatrox may reveal how early life learned to act in complex ways.
