Reference Terms
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Sun dog
A sun dog or sundog (scientific name parhelion) is a relatively common atmospheric optical phenomenon associated with the reflection/refraction of sunlight by the numerous small ice crystals that make up cirrus or cirrostratus clouds.
Note: The above text is excerpted from the Wikipedia article "Sun dog", which has been released under the GNU Free Documentation License.
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Earth & Climate News
April 14, 2024
Apr. 9, 2024 — Swimming in schools makes fish surprisingly stealthy underwater, with a group able to sound like a single fish. Engineers working with a high-tech simulation of schooling mackerel offer new insight into why fish swim in schools and promise for the ...
Mar. 25, 2024 — A new study combining genetic, palaeoecological, and archaeological evidence has unveiled the Persian Plateau as a pivotal geographic location serving as a hub for Homo sapiens during the early ...
Mar. 6, 2024 — A new study provides a new comprehensive look at the potential for flooding in a combined 32 cities along the Atlantic, Pacific, and Gulf coasts. It predicts as many as 500,000 people will be affected by flooding alongside 1 in 35 privately owned ...
Mar. 5, 2024 — While summer sea ice loss in the Arctic is inevitable, it can be reversed if the planet cools down, researchers ...
Latest Headlines
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Apr. 12, 2024 — New research has shown that the presence of wetlands and retention ponds alongside major highways led to an average reduction of almost 75% in the ...
Apr. 3, 2024 — Researchers have made a groundbreaking advancement in battery technology, developing a novel cathode material for rechargeable magnesium batteries ...
Apr. 12, 2024 — Oceanographers have shown for the first time the important role of the 'mixing down' of oxygen in maintaining healthy conditions in the deep ...
Apr. 11, 2024 — Cloud 'engineering' could be more effective for climate cooling than previously thought, because of the increased cloud cover produced, new research ...
Apr. 10, 2024 — An extensive review of current research incorporating geomorphology, hydrology, biogeochemistry, ecology and Indigenous knowledges identifies prevailing factors that shape water and energy flows in ...
Apr. 12, 2024 — Marine researchers have mapped the density of one of the most endangered large whale species worldwide, the North Atlantic right whale, using new data to help avoid right whales' harmful exposure to ...
Apr. 12, 2024 — Chimpanzees and bonobos are often thought to reflect two different sides of human nature -- the conflict-ready chimpanzee versus the peaceful bonobo -- but a new study shows that, within their own ...
Apr. 12, 2024 — A deep dive into macroalgae genetics has uncovered the genetic underpinnings that enabled macroalgae, or 'seaweed,' to evolve multicellularity. Three lineages of macroalgae developed multicellularity ...
Apr. 12, 2024 — Wildebeest migrations have become a rarer sight in Africa as humans continue to interrupt their historic migratory routes with roads, fences, cities, livestock and farmland. This has led to genetic ...
Apr. 12, 2024 — A study suggests that people with diets high in seafood may face a greater risk of exposure to PFAS -- the family of human-made toxins known as 'forever chemicals' -- than previously thought. The ...