Reconstructions show how some of the earliest animals lived—and died (w/ Video)
A bizarre group of uniquely shaped organisms known as rangeomorphs may have been some of the earliest animals to appear on Earth, uniquely suited to ocean conditions 575 million years ago. A new model devised ...
Evolutionary explanation for why some lessons more easily learned than others
It's easy to guess why it doesn't take long to learn to avoid certain behaviors and embrace others. But how do we know what drives these predilections? A study led by Aimee Dunlap at the University of Missouri-St. Louis, ...
The roots of human altruism
Scientists have long been searching for the factor that determines why humans often behave so selflessly. It was known that humans share this tendency with species of small Latin American primates of the ...
Evolution of marine crocodilians constrained by ocean temperatures
The ancestors of today's crocodiles colonised the seas during warm phases and became extinct during cold phases, according to a new Anglo-French study which establishes a link between marine crocodilian diversity ...
Researchers suggest rate of evolution change can explain discrepancy between molecular clocks and fossil evidence
How the snake got its venom
The venom of advanced snakes is a mixture of dozens of different proteins and is an example of an evolutionary innovation – a novel trait that has arisen in a particular animal group and which has contributed ...
How hummingbirds evolved to detect sweetness
Everything about hummingbirds is rapid. An iridescent blur to the human eye, their movements can be captured with clarity only by high-speed video.
Walking fish reveal how our ancestors evolved onto land
About 400 million years ago a group of fish began exploring land and evolved into tetrapods – today's amphibians, reptiles, birds, and mammals. But just how these ancient fish used their fishy bodies and ...
Study disputes notion that facial symmetry an indicator of health in children
Study traces evolutionary origins of migration in New World birds
Every year, millions of birds make the journey from North America to Central and South America for the winter. But the evolutionary origins of this long-distance migration have remained opaque due to the ...
Is trophy hunting affecting bighorn sheep evolution? Research says no
UMSL scholar examines evolution of learning
Why do monkeys learn to be afraid of snakes and not flowers? Is this knowledge the result of evolution by natural selection? Did the monkeys that couldn't learn that association quickly die and not reproduce?
Are flexible parents adaptable parents?
(Phys.org) —The flexibility of parental behaviours to respond to changes in behaviour of their offspring may actually constrain the ability of parents to adapt to changes in their wider environment.
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