There are many levels at which a scientific question can be answered. An answer that is quite satisfying to a scientist from one discipline may be totally unsatisfactory to a scientist from another.

Hemoglobin helps red blood cells carry oxygen to your muscles and tissues. Abnormal hemoglobin levels can be a sign of several health problems. Hemoglobin is a component of your blood that delivers ...

Sickle cell disease (SCD) is a genetic disorder that causes red blood cells to take the shape of a sickle or a letter “C.” Levels of hemoglobin, a protein that helps carry oxygen on red blood cells, ...