Reference Terms
from Wikipedia, the free encyclopedia
Tetrahedron
A tetrahedron (plural: tetrahedra) is a polyhedron composed of four triangular faces, three of which meet at each vertex.
Note: The above text is excerpted from the Wikipedia article "Tetrahedron", which has been released under the GNU Free Documentation License.
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Science News
October 4, 2024
Oct. 4, 2024 A study determines when and how pterosaurs went from tiny tree-climbers to towering terrestrial titans Flying reptiles first came down from the trees in the mid-Jurassic Period, paving the way for giants with 10-meter wingspans. Fingers and toes ...
Oct. 3, 2024 Pockets of microbes have been found living within a sealed fracture in 2-billion-year-old rock. The rock was excavated from the Bushveld Igneous Complex in South Africa, an area known for its rich ore deposits. This is the oldest example of living ...
Oct. 3, 2024 According to a new study, colonies of ants began farming fungi when an asteroid struck Earth 66 million years ago. This asteroid impact caused a global mass extinction but also created ideal ...
Oct. 3, 2024 The extinction of hundreds of bird species caused by humans over the last 130,000 years has led to substantial reductions in avian functional diversity -- a measure of the range of different roles ...
Latest Headlines
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Oct. 2, 2024 By studying rare fossils of jaws and other skull parts of a long-extinct Caribbean monkey, a team of researchers says it has uncovered new evidence ...
Oct. 2, 2024 A new thought piece highlights the challenges facing healthcare researchers and decision makers in the quest to improve population health in a constantly evolving healthcare landscape. The authors ...
Oct. 1, 2024 Using a sophisticated brain-imaging system, neuroscientists say they have successfully reactivated a specific memory circuit in mice, causing them to ...
Oct. 1, 2024 Six epigenetic features define the new Epigenetic Hallmarks of Cancer, an add-on to the widely accepted Hallmarks of Cancer. Scientists concluded that malignant transformation requires some degree of ...
Oct. 4, 2024 A research team has revealed that a molecule in the brain -- ophthalmic acid -- unexpectedly acts like a neurotransmitter similar to dopamine in regulating motor function, offering a new therapeutic ...
Oct. 4, 2024 The University of Cincinnati's Debanjan Bhattacharya is first author of new research published in Cancers that found the drug AM-101 improves the ...
Oct. 4, 2024 Genome instability can cause numerous diseases. Cells have effective DNA repair mechanisms at their disposal. A research team has now gained new insights into the DNA damage ...
Oct. 4, 2024 A new study shows strong alignment between real-world outcomes and those seen in clinical trials among a broad population of patients with relapsed or refractory multiple myeloma. In the first study ...
Oct. 4, 2024 Researchers have found that exposing a certain class of particles -- micron-sized beads endowed with a special magnetic sensitivity -- to a rapidly alternating, rotating magnetic field causes them to ...
Oct. 4, 2024 Researchers identified a lipid that is involved in regulating cardiac ion channels, providing insights into possible mechanisms of cardiac arrhythmias in heart failure and a potential pathway for ...