HealthHuman placentas are full of mutated cells dumped by the embryo The genetic history of individual placentas suggests that they can tolerate cancer-like mutations and act as a place for the developing embryo to shunt abnormal cells News
LifeBottlenose dolphins may control their heart rates to avoid the bends Bottlenose dolphins may consciously vary their heart rates depending on how far they want to dive, in an effort to avoid decompression sickness News