Reference Terms
from Wikipedia, the free encyclopedia
Radiocarbon dating
Radiocarbon dating is a radiometric dating method that uses the naturally occurring isotope carbon-14 to determine the age of carbonaceous materials up to ca 60,000 years.
Note: The above text is excerpted from the Wikipedia article "Radiocarbon dating", which has been released under the GNU Free Documentation License.
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Fossils & Ruins News
May 13, 2025
May 12, 2025 — Researchers analyzed 788 obsidian artifacts from Tenochtitlan, revealing that the Mexica (Aztec) Empire sourced this important material from at least eight different locations, including regions outside their political control. While 90% of ...
May 6, 2025 — Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new ...
May 1, 2025 — A new study links fossilized flying reptile tracks to animals that made them. Fossilized footprints reveal a 160-million-year-old invasion as pterosaurs came down from the trees and onto the ground. ...
Apr. 30, 2025 — An experiment seven years in the making has uncovered new insights into the nature of consciousness and challenges two prominent, competing scientific theories: Integrated Information Theory (IIT) and Global Neuronal Workspace Theory (GNWT). The ...
Latest Headlines
updated 12:56 pm ET
May 12, 2025 — Originally from South America, the charismatic tegu made its way to the United States via the pet trade of the 1990s. But a recent discovery shows ...
May 9, 2025 — Modern HIV medicine is based on a common genetic mutation. Now, researchers have traced where and when the mutation arose -- and how it protected our ancestors from ancient ...
May 9, 2025 — The Arctic landscape during the Cretaceous Period may have been dominated by the dinosaurs, but the rivers and streams held something more familiar. Alaska's fresh waters 73 million years ago were ...
May 9, 2025 — Scientists have discovered fossil evidence of an endangered, living tropical tree species. The unprecedented find was made in Brunei, a country on the large island of Borneo, and reveals a critical ...
May 7, 2025 — Life depends on genes being switched on and off at exactly the right time. Even the simplest living organisms do this, but usually over short distances across the DNA sequence, with the on/off switch ...
May 7, 2025 — Newly discovered species of extinct fish shows striking similarities to unrelated modern-day predators, suggesting certain traits have emerged multiple times and remained consistent over hundreds of ...
May 6, 2025 — A new study is reshaping how scientists date dinosaur fossils in Alberta's Dinosaur Provincial Park (DPP). Using advanced drone-assisted 3D mapping, ...
May 6, 2025 — Using rock samples collected from the Wasatch Fault, geoscientists combined experiments and analysis with examinations of fault rock textures. The ...
May 5, 2025 — Hydrologists show most streamflow out of the West's mountains is old snowmelt on a multi-year underground journey. New study finds that spring runoff is on average 5 years ...
May 5, 2025 — Engineers are making it easier for researchers from a broad range of backgrounds to understand how different species are evolutionarily related, and support the transformative biological and medical ...