New research on our internal trade-off when physical and mental performance are put in direct competition has found that cognition takes less of a hit, suggesting more energy is diverted to the brain than body muscle. Researchers say the findings support the 'selfish brain' theory of human evolution.
One of the largest global mass extinctions did not fundamentally change marine ecosystems, scientists have found.
Most people who have been unfaithful do not believe it when their partner says they forgive them. And the fact that men often do not realize that emotional infidelity is a problem just feeds the conflict.
A yeast protein that evolved from scratch can fold into a compact three-dimensional shape -- contrary to the general understanding of young proteins. Recent evidence suggests new genes can arise from the non-coding sections, or 'junk,' DNA and that those new genes could code for brand-new proteins. Scientists thought such newly evolved proteins were works-in-progress that could not fold into complex shapes the way more ancient proteins do.
A fossilized skeleton of a tyrannosaur discovered in Utah's Grand Staircase-Escalante National Monument was airlifted by helicopter Oct. 15, and delivered to the Natural History Museum of Utah where it will be uncovered, prepared, and studied. The fossil is approximately 76 million years old and is likely an individual of the species Teratophoneus curriei.
How do new species arise and diversify in nature? Natural selection offers an explanation, but the genetic and environmental conditions behind this mechanism are still poorly understood. Researchers have just figured out how water striders (family Veliidae) of the genus Rhagovelia developed fan-like structures at the tips of their legs. These structures allow them to move upstream against the current, a feat beyond the abilities of other water striders that don't have fans.
Dogs produce more facial expressions when humans are looking at them, according to new research from the University of Portsmouth.
Researchers have discovered two genes underlying the evolution of a water striding insect fan used for locomotion, which they say were essential for survival in fast-flowing stream environments.
A British enthusiasm for feeding birds may have caused UK great tits to have evolved longer beaks than their European counterparts, according to new research. The findings, published in Science, identify for the first time the genetic differences between UK and Dutch great tits which researchers were then able to link to longer beaks in UK birds.
Researchers who've analyzed the complete mitochondrial genomes from ancient samples representing two species of saber-toothed cats have a new take on the animals' history over the last 50,000 years. The data suggest that the saber-toothed cats shared a common ancestor with all living cat-like species about 20 million years ago. The two saber-toothed cat species under study diverged from each other about 18 million years ago.