Mystery tower fossils may be a whole new kind of life

Why the human penis is unusually large compared to that of other primates is a long-standing evolutionary question

Bird retinas work without oxygen from blood vessels, instead they power themselves with a flood of glucose that feeds glycolysis

Chronic stress causes progressive bone loss through sustained glucocorticoid (cortisol) receptor signaling

Back-scratching bovine leads scientists to reassess intelligence of cows

Girls are happier than boys at school, new research shows. Understanding why may all boil down to biology

Z-RNA is a rare left-handed helix that activates a self-destruct sequence in our cells when viruses invade

Pigeons detect Earth's magnetic field using electromagnetic induction, the same physical principle as wireless phone charging

Positive interactions dominate among marine microbes, six-year study reveals: « Warming ocean temperatures appear to alter relationships among microscopic organisms with unknown consequences

Sick young ants send out a 'kill me' scent to prevent deadly epidemics