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Close Family Ties Keep Cheaters in Check: Why Almost All Multicellular Organisms Begin Life as a Single Cell
December 15, 2011 — Any multicellular animal poses a special difficulty for the theory of evolution. Most of its cells will die without reproducing, and only a privileged few will pass their genes. Given the incentive ... > full storyMore: -
Shape, Fit of Reproductive Organs Evolve Quickly and in Concert, Leaving Size Behind
December 15, 2011 — Believed critical for determining which individuals can -- or cannot -- successfully reproduce with each other, genitalia not only figure prominently in the origin of new species, but are also ... > full story -
Scientists Discover Second-Oldest Gene Mutation
December 15, 2011 — A new study has identified a gene mutation that researchers estimate dates back to 11,600 B.C., making it the second oldest human disease mutation known. The mutation was described in people of ... > full story -
Follow Your Nose: Compared to Neanderthals, Modern Humans Have a Better Sense of Smell
December 14, 2011 — High-tech medical imaging techniques were recently used to access internal structures of fossil human skulls. Researchers used sophisticated 3-D methods to quantify the shape of the basal brain as ... > full story -
Birds Caught in the Act of Becoming a New Species
December 8, 2011 — A study of South American songbirds has shown that these birds differ dramatically in color and song yet show very little genetic differences, indicating they are on the road to becoming a new ... > full story -
Why Aren't We Smarter Already? Evolutionary Limits on Cognition
December 7, 2011 — We put a lot of energy into improving our memory, intelligence, and attention. There are even drugs that make us sharper, such as Ritalin and caffeine. But maybe smarter isn't really all that better. ... > full storyMore: -
New Horned Dinosaur Announced Nearly 100 Years After Discovery
December 6, 2011 — A new species of horned dinosaur was just announced by an international team of scientists, nearly 100 years after the initial discovery of the fossil. The animal, named Spinops sternbergorum, lived ... > full story -
Acquired Traits Can Be Inherited Via Small RNAs
December 5, 2011 — Researchers have found the first direct evidence that an acquired trait can be inherited without any DNA involvement. The findings suggest that Lamarck, whose theory of evolution was eclipsed by ... > full story -
Ancient Environment Found to Drive Marine Biodiversity
November 24, 2011 — 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 ... > full storyMore: -
Spiders, Webs and Insects: A New Perspective on Evolutionary History
November 24, 2011 — The orb web, typical of a large number of spider species, has a single evolutionary origin, according to molecular phylogenetic research. The study presents the hypothesis that the diversification of ... > full story
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