Latest Geological history of Earth Stories
A whale song recorded by marine biologists in the frigid waters of Antarctica may belong to an entirely new species of the massive aquatic mammal, according to new research published earlier this month in the Society for Marine Mammalogy journal Marine Mammal Science.
For the first time, scientists plan to conduct an expedition to collect and analyze core samples from the 125-mile-wide Chicxulub impact site in Mexico, a crater believed to have been caused by the asteroid that wiped out the dinosaurs more than 65 million years ago.
Nonprofit has saved eight million acres of critical habitat to date WARRENTON, Va., March 11, 2015 /PRNewswire-USNewswire/ --
Through the examination of tiny microscopic fossils, a large team of biologists has found that a community of deep-sea microbes hasn’t evolved at all in more than 2 billion years, according to a new studt published in the Proceedings of the National Academy of Sciences.
Authors of an article featured in the new issue of Rangeland Ecology & Management provide an in-depth analysis of how information regarding plant life cycles may change rangeland management
In devising his theories about evolution, Darwin theorized that species evolved on Earth slowly over millions of years. However, the fossil record doesn’t agree with the slow-and-steady model as a massive explosion of species took place 530 million years ago during the Cambrian era.
Spectacular eruptions at Bárðarbunga volcano in central Iceland have been spewing lava continuously since Aug. 31. Massive amounts of erupting lava are connected to the destruction of supercontinents and dramatic changes in climate and ecosystems.
A special issue of Rangelands explores California's diverse plant and wildlife species.
Search Enables Scientific Best Practices to be More Easily Shared Frankfurt am Main (PRWEB) October 17, 2014 Search Technologies, the leading IT services
Rainforests are forests that are characterized by high levels of rainfall, with definitions based on a minimum usual annual rainfall of about 68 to 78 inches. The monsoon trough, or otherwise known as the intertropical convergence zone, holds an important role in producing the climatic conditions that are essential for the Earth’s tropical rainforests. About 40 to 75 percent of all biotic species are native to the rainforests. It’s been estimated that there might be many millions of...
Desertification is a form of land degradation in which a comparatively dry land area becomes more and more arid, normally losing its bodies of water along with its wildlife and vegetation. This is a result of a variety of factors, such as climate change and human activities. Desertification is an important global, ecological, and environmental issue. There is substantial controversy over the proper definition of the term “desertification”. The most broadly accepted of these is that of...
The Paleoproterozoic is the first of three subdivisions of the Proterozoic Eon (occurring from 2.5 billion to 1.6 billion years ago (Ga). This period is marked by the first stabilization of the continents, and also when cyanobacteria--a type of bacteria that uses biochemical processes of photosynthesis to produce oxygen--evolved. Experts have found paleontological evidence that during at least part of the Paleoproterozoic era, about 1.8 Ga, the earth year was about 450 days long, with days...
The Archean (formerly Archaeozoic) is a geologic eon between the Hadean and Proterozoic eons. The Archean Eon begins at roughly 3.8 billion years ago (Ga) and ends at about 2.5 Ga. But unlike all other geological ages, which are based on stratigraphy, The Archean eon is defined chronometrically. The lower boundary of 3.8 Ga has also not been officially recognized by the International Commission on Stratigraphy. The name Archean is derived from the ancient Greek (Arkhe), meaning...
The Hadean is the unofficial geological period of time that lies just before the Archean time period. The Hadean began with the formation of the Earth roughly 4.5 billion years ago (Ga) and ended about 3.8 Ga; the latter date varies according to different sources. Hadean is derived from Hades, Greek for “underworld,” referring to the hellish conditions on the planet at the time. The term was coined in 1972 by geologist Preston Cloud. The period was later classified as the “Priscoan...
- To say in too many words; to express verbosely.
- To express in too many words: sometimes used reflexively.
- The leading idea or a repeated phrase, as of a song or ballad; the refrain; burden.