Reference Terms
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Circle of latitude
On the Earth, a circle of latitude or parallel is an imaginary east-west circle that connects all locations with a given latitude.
Note: The above text is excerpted from the Wikipedia article "Circle of latitude", which has been released under the GNU Free Documentation License.
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Earth & Climate News
April 13, 2025
Apr. 9, 2025 — Evidence shows that hunter-gatherers were crossing at least 100 kilometers (km) of open water to reach the Mediterranean island of Malta 8,500 years ago, a thousand years before the arrival of the ...
Apr. 2, 2025 — Using a mathematical model, researchers have shed new light on the transition from hunter-gatherer to farming societies. Rather than focusing exclusively on external factors, they looked at internal demographics and the significant impact of human ...
Mar. 24, 2025 — Researchers have discovered that chimpanzees living in Gombe Stream National Park in Tanzania employ a degree of engineering when making their tools, deliberately choosing plants that provide ...
Mar. 20, 2025 — A new study has discovered that birds in the Galapagos Islands are changing their behavior due to traffic noise, with those frequently exposed to vehicles showing heightened levels of aggression. During trials involving traffic noise, Galapagos ...
Latest Headlines
updated 12:56 pm ET
Apr. 11, 2025 — A novel paper is widening understanding of how species interact within ecosystems via the so-called 'Internet of Nature.' The paper reveals that species not only exchange matter and energy but also ...
Apr. 10, 2025 — What is the role of dissolved organic matter in the deep sea? In a study relating to this question, researchers have investigated the composition of dissolved organic matter (DOM) in detail. Their ...
Apr. 10, 2025 — Scientists have developed an innovative system -- called MetaFlowTrain -- that allows the study of metabolic exchange and interactions within microbial communities under different environmental ...
Apr. 10, 2025 — Bacteria play key roles in degrading organic matter, both in the soil and in aquatic ecosystems. While most bacteria digest large molecules externally, allowing other community members to share and ...
Apr. 7, 2025 — Scientists have discovered a new phylum of microbes in the Earth's Critical Zone, an area of deep soil that restores water quality. Ground water, which becomes drinking water, passes through where ...
Apr. 9, 2025 — New research suggests conservation efforts could more effectively identify and protect bird species at greatest risk from climate change by better understanding the range of specific conditions they ...
Apr. 9, 2025 — New research revealed the remarkable chemical diversity of substances exuded by coral reefs and demonstrated that thousands of different chemicals ...
Apr. 9, 2025 — A study has shown that Europe has adapted better to low temperatures than to high temperatures over the last two decades. The relative risk of mortality at the coldest temperatures has decreased by ...
Apr. 9, 2025 — New technology could enable more sustainable and cheaper production of bio-oils to replace petroleum-based products in electronic, construction and automotive applications. The technology, known as ...
Apr. 9, 2025 — Bird species that do well in urban areas are more colorful and less ...