Scientists found preserved blood vessel structures in a T. rex fossil, offering new insight into dinosaur healing and fossilization.

A newly discovered prehistoric mammal may hold clues to how life survived the dinosaur-killing extinction. The tiny species, ...

Discovery bolsters theory that ancient mitochondria formed brand-new, specialized ‘sacs’ in cells by shedding their outer ...

The evolutionary case for eating meat is etched into human anatomy — but so is the case against it. The science deserves more ...