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Latest Historical geology Stories

Rising Temperatures Could Lead To Sea Levels Rising Three Feet Or More
2012-11-15 13:56:59

April Flowers for redOrbit.com - Your Universe Online A rapid response between global temperatures and ice volume/sea-level that could lead to sea-levels rising by over 3 feet have been revealed by a new study from the University of Southampton. Global ice-volume variability has been one of the main feedback mechanisms in climate change during the last few million years. This is because of the strong reflective properties of large ice sheets. Scientists reconstruct ice volume...

Climate Change Bad News For US Military
2012-11-11 09:43:38

redOrbit Staff & Wire Reports — Your Universe Online Food shortages, natural disasters, energy supply issues and the spread of epidemics are some of the possible climate-related perils the U.S. military needs to prepare to deal with, the National Academies claim in a new report released Friday. According to Suzanne Goldenberg, U.S. Environment Correspondent with The Guardian, the report advises American defense personnel to "start planning for natural disasters, sea-level...

What Triggered Earth's Last Big Freeze
2012-11-06 09:53:08

April Flowers for redOrbit.com - Your Universe Online Climate scientists have long debated whether floodwaters from melting of the Laurentide Ice Sheet flowed northwest into the Arctic first, or east via the Gulf of St. Lawrence to weaken ocean thermohaline circulation and have a frigid effect on global climate. This debate concerning the melt, which ushered in the last major cold episode about 12,900 years ago, has been raging for about 30 years. A research team from the University of...

Global Warming 250 Million Years Ago Triggered Slow Species Recovery
2012-11-05 12:49:52

Brett Smith for redOrbit.com - Your Universe Online After a major extinction event occurred 250 million years ago, many species that survived had a long, slow recovery, which was exacerbated by the effects of global warming, according to a new study presented at the Geological Society of America meeting in North Carolina this week. Ohio State University doctoral student Alexa Sedlacek, in his study, found that rising temperatures, high levels of greenhouse gases and a more acidic ocean,...

Ancient Climate Change Made Hippos Smaller
2012-10-26 11:14:29

April Flowers for redOrbit.com - Your Universe Online Have you heard of giant hippopotamuses wandering along the banks of the Elbe in Germany lately? They are not a common sight today, that is for sure, but 1.8 million years ago, hippos were a prominent part of European wildlife along with other megafauna such as woolly mammoths and giant cave bears. A new study by paleontologists, published in the journal Boreas, claims that the changing climate during the Pleistocene may have forced...

Oxygen's Rise And Fall In The Early Atmosphere And Ocean
2012-10-23 20:44:52

UC Riverside-led research team finds evidence for a dramatic rise in early oxygen about 2.3 billion years ago followed, more surprisingly, by an equally impressive fall Most researchers imagine the initial oxygenation of the ocean and atmosphere to have been something like a staircase, but with steps only going up. The first step, so the story goes, occurred around 2.4 billion years ago, and this, the so-called Great Oxidation Event, has obvious implications for the origins and evolution...

Permian Extinction Was Beginning Of 5-Million-Year Deadly Heat Wave
2012-10-19 09:27:25

Lawrence LeBlond for redOrbit.com - Your Universe Online Life about 250 million years ago was hard to come by. In fact, it was nearly non-existent. Scientists, studying why this period, known as the end-Permian event, lasted so long and have found a key ingredient: heat. Paul Wignall, a paleontologist at England´s Leeds University, and study coauthor, said during the 200,000-year-long Permian extinction the Earth began cooking, with life struggling to thrive, especially at the...

Polar Ice Sheet Melt Influenced By Underwater Landscape
2012-10-17 12:25:09

Brett Smith for redOrbit.com - Your Universe Online As average global temperatures rise, climatologists are scrambling to see how this development might affect polar ice sheet melt, which could potentially result in a dangerous rise in sea levels. In studying the polar ice sheets around Antarctica, a group of British researchers has found that the shape of water channels beneath the ice can have a strong effect on ice behavior, temporarily hiding indications of its retreat. A report...

Atlantic Heat Pump Was Once Faster
2012-10-16 13:39:01

April Flowers for redOrbit.com - Your Universe Online A new study from an international team of scientists led by environmental physicists at Heidleberg University in Germany suggests that the circulation of the Atlantic Ocean was faster during the last Ice Age than today. It has long been assumed that heat transport in the Atlantic Ocean during the last Ice Age was weaker, but according to the new data, it appears that it was actually stronger than it currently is. The team used...


Latest Historical geology Reference Libraries

Hula Painted Frog, Discoglossus nigriventer
2014-08-18 15:55:22

The Hula painted frog was considered extinct by the IUCN since 1996. Very little is known about the species because very few specimens have been found. In 1940 two adults and two tadpoles were collected but the smaller one was eaten by the larger one, and the tadpoles were lost. A single Hula painted frog was found in 1955 which was the last record of this specimen. The extinction of this species is said to be the result of the draining of lake Hula and its marshes in the 1950’s. Only...

Paleontology
2014-01-12 00:00:00

Paleontology or Palaeontology is the scientific study of prehistoric life, including the study of fossils to determine the organisms evolution and interactions with each other and their environments. Paleontological observations have been documented as far back as 5th century BC. The science became established in the 18th century as a result of Georges Cuvier’s work on comparative anatomy, and it developed quickly within the 19th century. The term itself comes from Greek palaios, meaning...

Rainforests
2013-04-19 19:33:20

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...

Climate Change
2013-04-01 11:05:27

Climate change is a substantial and lasting change in the statistical distribution of weather patterns over periods of time ranging from decades to millions of years. It might be a change in the average weather conditions, or in the distribution of weather around the average conditions. Climate change is a result of factors that include oceanic processes, biotic processes, variations in solar radiation received buy Earth, volcanic eruptions, and plate tectonics, and human induced alterations...

Geologic Clock With Events And Periods
2012-11-18 19:10:56

The Neoproterozoic is the third of three subdivisions of the Proterozoic Eon (occurring from 1 billion years ago to 542 million years ago). This terminal era of the Proterozoic is itself divided into three sub-periods called the Tonian, Cryogenian, and Ediacaran Periods. The most severe glaciation known in the geologic record occurred during the Cryogenian Period, when ice sheets reached the equator and formed a possible “Snowball Earth.” And the earliest fossils of multi-cellular life...

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Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.