Many U.S. colleges have lecture halls named after respected scientists who also promoted racial theories or practices that are now rejected. And increasingly, their names are being removed.

Years ago, doctors sometimes lied about whose sperm they used for artificial inseminations. Could it happen now? Some argue regulation is weak in the multibillion dollar fertility treatment industry.

A woman's health issues related to pregnancy don't always end at the baby's birth. Scientists say complications from childbirth, such as hypertension or diabetes, increase her risk of heart disease.

When they run into burning buildings, firefighters get exposed to carcinogens. In many states, laws were passed to protect them if they get cancer. But firefighters often get denied benefits anyway.