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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 -
Starving Orangutans Might Help to Better Understand Obesity and Eating Disorders in Humans
December 13, 2011 — New research examining how endangered Indonesian orangutans – considered a close relative to humans -- survive during times of extreme food scarcity might help scientists better understand ... > full storyMore: -
A Small Step for Lungfish, a Big Step for the Evolution of Walking
December 12, 2011 — The eel-like body and scrawny "limbs" of the African lungfish would appear to make it an unlikely innovator for locomotion. But its improbable walking behavior, newly described, redraws the ... > full story -
Disappearance of the Elephant Caused Rise of Modern Humans: Dietary Change Led to Modern Humans in Middle East 400,000 Years Ago
December 12, 2011 — Scientists have connected evidence about diet with other cultural and anatomical clues to conclude that the disappearance of the elephants led to the emergence of Homo sapiens in the Middle East much ... > 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: -
North America's Biggest Dinosaur Revealed
December 7, 2011 — New research has unveiled enormous bones from North America's biggest dinosaur. Researchers collected two gigantic vertebrae and a femur in New Mexico. The bones belong to the sauropod dinosaur ... > full story
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