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Male Sabertoothed Cats Were Pussycats Compared To Macho Lions
Despite their fearsome
fangs, male sabertoothed
cats may have been less
aggressive than many of
their feline cousins, says a
... > full story
'Duck-billed' Dinosaurs: Last European Hadrosaurs Lived In Iberian Peninsula
Spanish researchers have
studied the fossil record of
hadrosaurs, the so-called
"duck-billed" dinosaurs, in
the Iberian Peninsula for
... > full story
Caught In The Act: Butterfly Mate Preference Shows How One Species Can Become Two
Breaking up may not be hard
to do, say scientists who've
found a population of
tropical butterflies that
may be splitting into two
... > full story
Scientists Launch Effort To Sequence The DNA Of 10,000 Vertebrates
Scientists have an ambitious
new strategy for untangling
the evolutionary history of
humans and their biological
relatives: Create a genetic ... > full story
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Inefficient Selection: New Evolutionary Mechanism Accounts For Some Of Human Biological Complexity
November 4, 2009 — A painstaking genomic and proteomic analysis has found a new evolutionary mechanism that accounts for some of the biological complexity of human beings. The scientists who found the mechanism say it ... > full story -
Earliest Tyrannosauroid Rediscovered
November 4, 2009 — A long forgotten fossil skull in the collections of the Natural History Museum in London has now provided crucial clues to the early stages of the lengthy evolutionary history of Tyrannosaurus rex ... > full story -
Notorious 'Man-eating' Lions Of Tsavo Likely Ate About 35 People -- Not 135, Scientists Say
November 3, 2009 — The legendary "man-eating lions of Tsavo" that terrorized a railroad camp in Kenya more than a century ago likely consumed about 35 people -- far fewer than popular estimates of 135 victims, ... > full story -
New Clues To Extinct Falklands Wolf Mystery
November 3, 2009 — Ever since the Falklands wolf was described by Darwin himself, the origin of this now-extinct canid found only on the Falkland Islands far off the east coast of Argentina has remained a mystery. Now, ... > full story -
Speed Limit To The Pace Of Evolution, Biologists Say
November 3, 2009 — A major conclusion of the work is that for some organisms, possibly including humans, continued evolution will not translate into ever-increasing fitness. Moreover, a population may accrue mutations ... > full story -
Charles Darwin Really Did Have Advanced Ideas About The Origin Of Life
November 2, 2009 — When Charles Darwin published The Origin of Species 150 years ago, he deliberately avoided the subject of the origin of life. This, coupled with the mention of the 'Creator' in the last paragraph of ... > full story -
Snail Fossils Suggest Semiarid Eastern Canary Islands Were Wetter 50,000 Years Ago
November 2, 2009 — Isotopic measurements performed on fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands resulted in oxygen isotope ratios that suggest the Spanish archipelago off ... > full story -
Venomous Shrew And Lizard: Harmless Digestive Enzyme Evolved Twice Into Dangerous Toxin In Two Unrelated Species
November 2, 2009 — Biologists have shown that independent but similar molecular changes turned a harmless digestive enzyme into a toxin in two unrelated species -- a shrew and a lizard -- giving each a venomous ... > full story -
Newly Discovered Ankylosaur Dinosaur Is 'Biological Version Of An Army Tank'
November 1, 2009 — Paleontologists have discovered a new species of dinosaur that lived 112 million years ago during the early Cretaceous of central Montana. The new dinosaur, a species of ankylosaur is the biological ... > full story -
A Solution To Darwin's 'Mystery Of The Mysteries' Emerges From The Dark Matter Of The Genome
November 1, 2009 — Why do crosses between two species often yield sterile or inviable progeny (for instance, mules emerging from a cross between a horse and a donkey)? New research suggests that the solution to this ... > full story
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