Under the Microscope: "The Adonis blue butterfly is rare because it's choosy. It lays its eggs (like the one above) only on horseshoe vetch, a European perennial. What's more, it looks for patches cropped by rabbits that allow easy landing.
Sand magnified 250 times, each grain stunningly individual.
Neisseria meningitidis is a Gram-negative diplococcus that is one of the most common causes of bacterial meningitis. Meningitis is an inflammation of the meninges that protect the brain and spinal cord