Scientists say they have managed to turn patients’ own skin cells into healthy heart muscle in the laboratory.
skin cells
Ultraviolet Radiation Exposure From Sun, Left Whales Sunburned
Like humans, the light skinned whales seemed to have the most difficulty dealing with the sun. Blue whales had more severe skin damage than their darker skinned counterparts, fin whales and sperm whales, even though the latter spend so much time at the surface.