Though there is no single profile for school shooters, people at risk for hurting themselves or others often exhibit warning signs before committing acts of violence. Knowing the signs can help prevent crimes and get people the help they need.
Scientists have successfully created fully grown human eggs for the first time in a laboratory. Researchers say this development could improve fertility treatment for many women. By externally replicating the process where egg cells mature in the ovaries, scientists believe new treatments may be developed. In previous studies human eggs were developed in the laboratory, but never to full maturity. For this experiment the eggs were removed from ovary tissue and grown in a laboratory until fertilization.
Male-patterned hair loss has a genetic component. However, some hair loss can be caused by internal disease or medications. Dermatologists use physical examination, biopsies and blood tests to make a hair loss diagnosis.