Most people exposed to the parasites behind babesiosis don't get sick, but for others, the infection can be deadly.

Red blood cells are disc-shaped cells with no nucleus. They are very small but their flattened shape gives a relatively large surface area which allows rapid diffusion of oxygen.

This month's full moon was due to pass through the shadow of Earth either late Thursday night or very ... red become more pronounced as the moon enters the darkest part of the shadow. A "Blood ...