Nearly 2 million years ago a species of upright apes known as Homo erectus began to use fire. It was a gradual process, from opportunistic users of natural fires to masters able to craft flames from flint and tender. We are ...
Astrobiology
Aug 7, 2023
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We have discovered more than 5,400 planets in the universe. These worlds range from hot jovians that closely orbit their star to warm ocean worlds to cold gas giants. While we know they are there, we don't know much about ...
Astronomy
Jul 31, 2023
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31
Criegee intermediates are produced in the ozonolysis of unsaturated compounds in the atmosphere. These intermediates are especially important because they contribute to the formation of OH radicals during the night and to ...
Analytical Chemistry
Jul 17, 2023
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2
Schools in New Delhi had to close Monday after heavy monsoon rains battered the Indian capital. Landslides and flash floods killed at least 15 people over the last three days. Farther north, the overflowing Beas River swept ...
Environment
Jul 10, 2023
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1
NASA's MAVEN (Mars Atmosphere and Volatile EvolutioN) mission acquired stunning views of Mars in two ultraviolet images taken at different points along our neighboring planet's orbit around the sun.
Planetary Sciences
Jun 23, 2023
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30
How close can a rocky planet be to a star, and still sustain water and life?
Astrobiology
Jun 21, 2023
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82
The evolution of Earth's climate contains many components. And new research has shown just how critical the ozone layer is to the surface temperature of the Earth. Without an ozone layer, our planet would be 3.5 Kelvin cooler.
Planetary Sciences
Jun 14, 2023
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25
In the tropics, above the equatorial rainforests and oceans, the strong solar radiation hitting Earth propels a stream of warm, moist air far upward.
Earth Sciences
May 29, 2023
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Imagine an Earth-sized planet that's not at all Earth-like. Half this world is locked in permanent daytime, the other half in permanent night, and it's carpeted with active volcanoes. Astronomers have discovered that planet.
Astrobiology
May 17, 2023
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80
For more than a decade, astronomers have been trying to get a closer look at GJ 1214b, an exoplanet 40 light-years away from Earth. Their biggest obstacle is a thick layer of haze that blankets the planet, shielding it from ...
Astronomy
May 10, 2023
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