The bacterium chlamydia trachomatis is a major cause of sexually transmitted diseases. Bacteria have lots of tricks up their ...

Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion ...

Stomata, microscopic pores on plant leaves, regulate gas exchange and water loss by opening or closing in response to ...

Plants use quantum mechanics to optimize photosynthesis, inspiring new artificial light-harvesting technologies.