Million-Year-Old Cambrian Fossils Indicate Earliest Known Example of Predator-Prey 'Arms Race' Scientists have found evidence ...

An international team of scientists has uncovered a fascinating piece of the evolutionary puzzle: how the ventral nerve cord, a key component of the central nervous system, evolved in ecdysozoan ...

Ants learn from past encounters, showing more aggression toward familiar aggressive rivals and less toward passive ones. This ...