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Thursday, Apr 17th

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T. Rex Ancestor’s Hip Found in Australia, Proving Life in South

A dinosaur bone found in Australia belonged to an ancestor of Tyrannosaurus rex, according to a study that provides the first evidence that the fearsome predator’s predecessors lived in Southern continents.

The hip bone, which was found in Dinosaur Cove in Victoria state -- about 220 kilometers (136 miles) southwest of Melbourne -- was that of a tyrannosaur that lived about 110 million years ago, 40 million years before T. rex roamed the earth, researchers said in a Science study today.

The discovery disproves a previous theory that tyrannosaurs never lived in the Southern continents, and raises the question of why larger predators such as T. rex evolved only in the Northern hemisphere, said Roger Benson, a researcher at the University of Cambridge in the U.K. who led the study.

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Neither Neanderthal nor sapiens: new human relative Identified

At a press conference yesterday, researchers announced the completely unexpected: a Siberian cave has yielded evidence of an entirely unknown human relative that appears to have shared Asia with both modern humans and Neanderthals less than 50,000 years ago.

The find comes courtesy of a single bone from individual's hand. Lest you think that paleontologists are overinterpreting a tiny fragment, it wasn't the shape of the bone that indicates the presence of a new species—it was the DNA that it contained.

The paper that describes the finding comes courtesy of the Max Planck Institute's Svante Pääbo, who has been actively pursuing the sequencing of the Neanderthal genome. It seems likely that this particular bone fragment was targeted due to suspicions that it might also provide an additional Neanderthal sequence.

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Amphibious caterpillars discovered in Hawaii

Unlike other amphibious creatures that can survive underwater on stored oxygen but must come back up for air, these caterpillars can spend several weeks without ever breaking the surface, according to the paper, which was published online on Monday in Proceedings of the National Academy of Sciences.

It isn't yet clear how the insects do it. Rubinoff and co-worker Patrick Schmitz of the University of Hawaii did not find any water-blocking stopper over the caterpillars' tracheae or evidence of gills. The animals drowned quickly when kept in standing water, so they seem to need the higher levels of oxygen present in running water, and probably absorb it directly through pores in their body, the scientists said.

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New data, law of evidence support view of Mars having indigenous, intelligent extraterrestrial life

“Evidence .... Show me evidence of CURRENT ‘intelligent life on Mars.’ :)  All we see are ruins ... literally thousands of square miles ... of ruins.  And, a lot of mud covering them ... slowly eroding and blowing away in the wind.  Which is why we can now see glimpses [of] what was once buried in a vast, planetary catastrophe--Which suddenly ENDED the Martian Civilization ... a long, long time ago. RCH  - P.S.  If there is anyone NOW living on Mars, it is ‘us’ -- as part of the ~60-year-old Secret Space Program."

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Indonesian 'hobbit' challenges evolutionary theory

Her scientific name is Homo floresiensis, her nickname is "the hobbit," and the hunt is on to prove that she and the dozen other hobbits since discovered are not a quirk of nature but members of a distinct hominid species.

The discovery of Homo floresiensis shocked and divided scientists. Here apparently was a band of distant relatives that exhibited features not seen for millions of years but were living at the same time as much more modern humans. Almost overnight, the find threatened to change our understanding of human evolution.

It would mean contemplating the possibility that not all the answers to human evolution lie in Africa, and that our development was more complex than previously thought.

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Darwin Foes Add Warming to Targets

Critics of the teaching of evolution in the nation’s classrooms are gaining ground in some states by linking the issue to global warming, arguing that dissenting views on both scientific subjects should be taught in public schools.

In Kentucky, a bill recently introduced in the Legislature would encourage teachers to discuss “the advantages and disadvantages of scientific theories,” including “evolution, the origins of life, global warming and human cloning.”

The bill, which has yet to be voted on, is patterned on even more aggressive efforts in other states to fuse such issues. In Louisiana, a law passed in 2008 says the state board of education may assist teachers in promoting “critical thinking” on all of those subjects.

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Northwest at risk of megaquake like one in Chile

Just 50 miles off the Pacific Northwest coast is an earthquake hotspot that threatens to unleash on Seattle, Portland and Vancouver the kind of damage that has shattered Chile.

The fault has been dormant for more than 300 years, but when it awakens — tomorrow or decades from now — the consequences could be devastating. Recent computer simulations of a hypothetical magnitude-9 quake found that shaking could last 2 to 5 minutes — strong enough to potentially cause poorly constructed buildings from British Columbia to Northern California to collapse and severely damage highways and bridges.

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