Quantcast

Latest Extinction event Stories

2011-10-07 09:02:35

News About Planet-Threatening Events Space is a violent place. If a star explodes or black holes collide anywhere in our part of the Milky Way, they´d give off colossal blasts of lethal gamma-rays, X-rays and cosmic rays and it´s perfectly reasonable to expect Earth to be bathed in them. A new study of such events has yielded some new information about the potential effects of what are called “short-hard” interstellar radiation events. Several studies in the past...

2011-10-03 14:16:45

Harsh living conditions caused by major fluctuations in the carbon content and sea levels, overacidification and oxygen deficiency in the seas triggered the largest mass extinction of all time at the end of the Permian era 252 million years ago. Life on Earth was also anything but easy after the obliteration of over 90 percent of all species: Throughout the entire Early Triassic era, metazoan-dominated reefs were replaced by microbial deposits. Researchers had always assumed it took the Earth...

NASA Says Dinosaur Killer Still Remains At Large
2011-09-19 13:40:36

  NASA said on Monday that the family of asteroids believed to be responsible for the destruction of dinosaurs is innocent. Observations made by NASA's Wide-field Infrared Survey Explorer (WISE) confirmed that a 2007 study's claims that a huge asteroid known as Baptistina destroyed the dinosaurs was false. Although the new discovery has abolished one theory of how the dinosaurs ceased to exist, it did not bring about any new theories on the topic. The original theory used...

15cbb327421717ac5ee24bbdde90ba86
2011-07-22 06:20:00

The release of a huge amount of methane gas may have caused a massive, prehistoric extinction that gave way to the arrival of dinosaurs as the dominant life form on earth, according to a new study. Micha Ruhl and his team of researchers from the Nordic Center for Earth Evolution at the University of Copenhagen in Denmark suggest that the mass extinction of half of Earth's marine life over 200 million years ago was a result of a huge release of carbon methane into the atmosphere, which led to...

9098b6a5ef59fb5f4965c95594235d4d
2011-06-15 13:25:00

Researchers have pinpointed the timing of the start of an ancient global warming episode known as the Paleocene-Eocene thermal maximum (PETM). The early part of the Cenozoic era witnessed a series of transit global warming events called hyperthermals.  The most severe of these was the PETM at the Paleocene-Eocene boundary, which took place around 56 million years ago. Over a 20,000-year period, ocean temperatures rose globally by about 41 degrees Fahrenheit.  The team said one...

44d5f3b490cccfe0324a1042eb4c842f1
2011-03-27 11:22:15

After the biggest mass extinction in Earth's history "“ 250 million years ago "“ algae and bacteria in the ocean rebounded so fast that they consumed virtually all the oxygen in the sea, slowing the recovery of the rest of marine animals for several million years.A mass extinction is hard enough for Earth's biosphere to handle, but when you chase it with prolonged oxygen deprivation, the biota ends up with a hangover that can last millions of years.Such was the situation with the...

04ef407039721a8eda4d0c0fe81d2db11
2011-02-18 10:45:00

Researchers use a ground-breaking technique that reveals a relationship between cooler temperatures and Earth's second largest mass extinction, which occurred about 450 million years ago In the Late Ordovician Period of Earth's geologic history, about 450 million years ago, more than 75 percent of marine species perished and Earth scientists have been seeking to discover what caused the extinction. It was the second largest in Earth's history. Now, using a new research method, investigators...

6967218ba4fdb33835f8a142274bdb481
2011-01-29 11:42:34

About 450 million years ago, Earth suffered the second-largest mass extinction in its history"”the Late Ordovician mass extinction, during which more than 75 percent of marine species died. Exactly what caused this tremendous loss in biodiversity remains a mystery, but now a team led by researchers at the California Institute of Technology (Caltech) has discovered new details supporting the idea that the mass extinction was linked to a cooling climate."While it's been known for a long...

c2f072b1ae36cdbeea72126733728be41
2010-12-22 09:25:00

A massive new fossil site discovered in southwestern China marks the first discovery of a complete ecosystem which recovered following a mass extinction. According to Guardian Science Correspondent Ian Sample, "the spectacular haul of 20,000 fossils," which was discovered at a hillside in what it now Luoping county in the Yunnan Province of China, were "beautifully preserved" and included "mollusks, sea urchins and arthropods, alongside much larger animals that occupied the top of the food...


Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
Related