Georgia Gov. Nathan Deal has signed into law a measure banning abortions after 20 weeks of pregnancy except in cases where the mother’s life is in danger or the fetus is unlikely to survive. In a statement, Deal based his signing of the law on the highly contested notion that a fetus can feel pain at that stage. At least six other states currently ban abortion at 20 weeks of pregnancy based on the assumption of fetal pain, despite medical research debunking the idea.