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Latest Extinction event Stories

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 Origins Of Modern-day Deep-sea Animals Suggested By New Fossils
2012-10-11 08:18:53

A collection of fossil animals discovered off the coast of Florida suggests that present day deep-sea fauna like sea urchins, starfish and sea cucumbers may have evolved earlier than previously believed and survived periods of mass extinctions similar to those that wiped out the dinosaurs. The full results are published Oct. 10 in the open access journal PLOS ONE by Ben Thuy and colleagues from the University of Göttingen, Germany. Previously, researchers believed that these...

2012-08-21 22:48:21

Life in the world´s oceans faces far greater change and risk of large-scale extinctions than at any previous time in human history, a team of the world´s leading marine scientists has warned. The researchers from Australia, the US, Canada, Germany, Panama, Norway and the UK have compared events which drove massive extinctions of sea life in the past with what is observed to be taking place in the seas and oceans globally today. Three of the five largest extinctions of the past...

End-Permian Crisis Recovery Took Earth 10 Million Years
2012-05-28 04:07:34

It took the Earth 10 million years to recover from a cataclysmic event that wiped out 90% of plant and animal life some 250 million years ago, according to new evidence presented Sunday in the journal Nature Geoscience. According to a press release detailing the research, Dr. Zhong-Qiang Chen of the China University of Geosciences in Wuhan and Professor Michael Benton from the University of Bristol discovered that biological recovery from what they dub "the greatest mass extinction of all...

2012-02-22 21:32:41

A mysterious cycle of booms and busts in marine biodiversity over the past 500 million years could be tied to a periodic uplifting of the world's continents, scientists report in the March issue of The Journal of Geology. The researchers discovered periodic increases in the amount of the isotope strontium-87 found in marine fossils. The timing of these increases corresponds to previously discovered low points in marine biodiversity that occur in the fossil record roughly every 60 million...

Explosive Evolution Need Not Follow Mass Extinctions
2012-02-14 04:26:34

Following one of Earth's five greatest mass extinctions, tiny marine organisms called graptoloids did not begin to rapidly develop new physical traits until about 2 million years after competing species became extinct. This discovery, based on new research, challenges the widely held assumption that a period of explosive evolution quickly follows for survivors of mass extinctions. In the absence of competition, the common theory goes, surviving species hurry to adapt, evolving new...

Earth's Massive Extinction: The Story Gets Worse
2012-01-08 05:31:32

New finding on mercury-volcanic link could re-write history on past annihilations Scientists have uncovered a lot about the Earth´s greatest extinction event that took place 250 million years ago when rapid climate change wiped out nearly all marine species and a majority of those on land. Now, they have discovered a new culprit likely involved in the annihilation: an influx of mercury into the eco-system. “No one had ever looked to see if mercury was a potential culprit....

2011-11-28 10:18:35

Much of our knowledge about past life has come from the fossil record — but how accurately does that reflect the true history and drivers of biodiversity on Earth? "It's a question that goes back a long way to the time of Darwin, who looked at the fossil record and tried to understand what it tells us about the history of life," says Shanan Peters, an assistant professor of geoscience at the University of Wisconsin—Madison. In fact, the fossil record can tell us a great...

Image 1 - Ancient Environment Led To Current Marine Biodiversity
2011-11-28 05:49:20

Changes in global carbon, sulfur cycles and to sea-level fueled biological responses Much of our knowledge about past life has come from the fossil record, but how accurately does that record reflect the true history and drivers of biodiversity on Earth? "It's a question that goes back a long way to the time of Darwin, who looked at the fossil record and tried to understand what it tells us about the history of life," says Shanan Peters, a geoscientist at the University of...

Study Finds Culprits To Ice Age Mammal Extinctions
2011-11-02 13:30:15

A research team involving over 40 academic institutions around the world is trying to tackle the question of what caused extinctions in the Ice Age. The study found that the extinction of mammals like the woolly rhinoceros and woolly mammoth was not due to humans or climate change.  The team found using ancient megafauna DNA, climate data and the archeological record that humans played no part in the extinction of the wooly rhino or the musk ox in Eurasia.  The researchers...


Word of the Day
ween
  • To think; to imagine; to fancy.
  • To be of opinion; have the notion; think; imagine; suppose.
The word 'ween' comes from Middle English wene, from Old English wēn, wēna ("hope, weening, expectation"), from Proto-Germanic *wēniz, *wēnōn (“hope, expectation”), from Proto-Indo-European *wen- (“to strive, love, want, reach, win”).
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