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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A team of microbiologists and Earth scientists affiliated with several institutions in Germany reports that it was possible for methane to form in water on Earth before life began. In their study, reported in the journal ...
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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In recent years, the warming rate of the Arctic has been two to four times that of the global average, which has had a significant impact on climate change in the Northern Hemisphere. However, the physical mechanisms of Arctic ...
Earth Sciences
Jul 20, 2023
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One of the most commonly discussed challenges when starting our species' space exploration journey is how to get the resources necessary for life off of the Earth. Typically this is thought of as two things—water and oxygen, ...
Space Exploration
Jul 19, 2023
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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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Tropical forests are experiencing increasing vapor pressure deficits (D), with possible negative effects on tree growth. However, the mechanisms by which climatic variability drives tree growth are poorly understood. The ...
Plants & Animals
Jul 13, 2023
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8
When Ange Nzihou, an expert in converting society's waste into valuable products, visited Princeton in 2022, he brought with him a technique to transform waste biomass into graphene, a material with many uses from batteries ...
Nanomaterials
Jul 13, 2023
1
97
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
The sun as a source of energy, and catalysts to accelerate chemical reactions, were of critical importance in the emergence of the first biochemical molecules on Earth. A research team has now shown that a solid deposited ...
Biochemistry
Jul 10, 2023
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