The spring equinox is here. What does that mean?
Spring is almost here—officially, at least. The vernal equinox arrives on Tuesday, marking the start of the spring season for the Northern Hemisphere.
Spring is almost here—officially, at least. The vernal equinox arrives on Tuesday, marking the start of the spring season for the Northern Hemisphere.
Planetary Sciences
21 hours ago
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A research team led by Pro. Zhou Weijian from the Institute of Earth Environment of the Chinese Academy of Sciences, Zhengzhou University and the Xi'an Institute for Innovative Earth Environment Research, has revealed a new ...
Earth Sciences
Mar 4, 2024
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Permafrost, or ground that is frozen for two or more years, stretches over about 14 million square kilometers in the Northern Hemisphere, 15% of the hemisphere's land area. Cold temperatures limit the decomposition of organic ...
Earth Sciences
Mar 4, 2024
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Mars was once a wet world. The geological record of the Red Planet shows evidence for water flowing on the surface—from river deltas to valleys carved by massive flash floods.
Planetary Sciences
Feb 22, 2024
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Researchers from the University of Seville have investigated how the flowering of 51 species of shrubs, bushes and trees has changed over the last 35 years in Doñana National Park so as to understand how plant communities ...
Plants & Animals
Feb 16, 2024
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Climate changes usually happen over long periods of time, but during the last glacial period, extreme fluctuations in temperature occurred within just a few years. Researchers at the University of Basel have now been able ...
Earth Sciences
Feb 12, 2024
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A pair of small, interacting galaxies shine in this new NASA Hubble Space Telescope image. The larger of the two galaxies is named NGC 5410 and was discovered in 1787 by British astronomer William Herschel. It spans 80,000 ...
Astronomy
Jan 29, 2024
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Humans and our closest relatives, living apes, display a remarkable diversity of types of locomotion—from walking upright on two legs to climbing in trees and walking using all four limbs.
Evolution
Jan 29, 2024
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Colorful flowers, and the insects and birds that fly among their dazzling displays, are a joy of nature. But how did early relationships between flower color and animal pollinators emerge?
Evolution
Jan 26, 2024
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A team of scientists led by a Tulane University oceanographer has found that deposits deep under the ocean floor reveal a way to measure the ocean oxygen level and its connections with carbon dioxide in the Earth's atmosphere ...
Earth Sciences
Jan 19, 2024
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Coordinates: 45°0′0″N 0°0′0″E / 45°N 0°E / 45; 0
The Northern Hemisphere is the half of a planet that is north of the equator—the word hemisphere literally means 'half sphere'. It is also that half of the celestial sphere north of the celestial equator. Earth's northern hemisphere contains most of its land area and most of its human population (about 90%).
This text uses material from Wikipedia, licensed under CC BY-SA