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Jurassic Park. There, with that obvious reference out of the way, we can get started. Can we actually revive organisms (focusing on animals here) that have gone extinct? How? And how far away is it... 
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From
www
Can lost species ever become un-extinct? In the 1993 science fiction film "Jurassic Park," dinosaurs are cloned back to life after their DNA is discovered still intact within the bellies of ancient mosquitoes that were preserved in amber. While the science of cloning is still in its infancy, many scientists now believe it's only a matter of time before many extinct animals again walk the Earth.
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The importance of frogs in the food chain and their surprising role in human medicine is one reason why scientists are hurrying to rescue them from a deadly fungus, and preserve them in "amphibian arks".
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Western Europe has long been held to be the 'cradle' of Neandertal evolution since many of the earliest discoveries were from sites in this region.
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From
io9
After a hurricane wiped out all the lizard species on certain islands in the Bahamas, scientists re-populated the small islands with two lizards of each kind.
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Jurassic meow? Scientists at Monash University in Melbourne, Australia, have come up with a novel idea for possibly saving endangered big cats: reproduce them in the ...
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Massive swarms of stars are hotbeds for deadly gamma-ray bursts – a new study suggests such a burst might explain a mass extinction 440 million years ago...
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Researchers have discovered a new culprit likely involved in Earth's greatest extinction event: an influx of mercury into the ecosystem.
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The Ashaninka are one of the largest indigenous groups in South America, their ancestral homelands ranging from Brazil to Peru.
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It's well known that Earth's most severe mass extinction occurred about 250 million years ago. What's not well known is the specific time when the extinctions occurred. A team of researchers from North America and China have published a paper in Science which explicitly provides the date and rate of extinction.
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It was the greatest exinction event of all time (at least by Earth standards): Since the first organisms appeared on Earth approximately 3.8 billion years ago, life on the planet has had some close calls.
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Researchers say tropical regions of richest diversity are most at risk of losing frogs, toads, newts and salamanders...
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It's paradoxical that there are some species out there that we just can't exterminate, and not for want of trying. These creatures breed out of control and march steadily forth, taking human territory miles at a time.
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At Discover Magazine, Veronique Greenwood has a really interesting story about a mathematician who is helping to preserve Scottish Gaelic. How? The researcher, Anne Kandler, has put together some equations that can help native language supporters target their programs and plan their goals. Via Bilingual
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From
phys
Evolutionary biologists at the University of Toronto have found that individuals with low-quality genes may produce offspring with even more inferior chromosomes, possibly leading to the extinction of certain species over generations.
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http://www.erderetten.de George Church, Pioneer in Synthetic Biology, Harvard & MIT, USA (c) Brinzanik/Hülswitt/Kreis... Via Gerd Moe-Behrens
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One of Britain's rarest spiders has been brought back from the brink of extinction by conservationists.
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Computational modeling that examines evidence of how hominin groups evolved culturally and biologically in response to climate change during the last Ice Age also bears new insights into the extinction of Neanderthals.
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Around 250 million years ago, at the end of the Permian geologic period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth's history.
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Researchers are moving a step closer to solving one of the greatest murder mysteries of all time. It happened roughly 200 million years ago, marking the boundary between the Triassic and Jurassic periods, and the crime scene was the entire planet.
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(PhysOrg.com) -- Three Simon Fraser University biologists and an International Union for Conservation of Nature (IUCN) scientist say it’s no longer fiction but fact. No one will be able to find Nemo if conservation action isn’t taken soon.
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Earth history is different from ordinary history: it's much harder to nail down specific dates when everything happened millions of years ago and over huge, slow timescales. But it can be done, as shown by paleontologists who have pinpointed the exact date of the largest mass extinction to ever occur on earth.
The end-Permian mass extinction, which their study calls the “most severe biodiversity crisis in earth history,” wiped out 95% of marine life and 70% of life on land about 252.28 million years ago.
Via ramblejamble
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Earth's biggest mass extinction rolled over the planet like hell on wheels. For the first time, paleontologists have pinned down exactly when and how fast the granddaddy of all mass extinctions took place, and their findings leave the finger of blame pointing squarely at a colossal and long-lived injection of carbon dioxide into the atmosphere. Sound familiar? That ancient carbon dioxide came not from cars and factories, of course, but from massive volcanic eruptions, brush fires, and possibly even the combustion of coal seams ignited by hot lava.
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