Extreme heat's risks for pregnant women

Six million people are under heat advisories across the Central and Southern U.S. this week, with temperatures expected to be up to 35° above average. In Texas, temperatures reached triple digits, something historically uncommon for the month of May. CBS News medical contributor Dr. Céline Gounder explains the health concerns, especially for pregnant women.

Six million people are under heat advisories across the Central and Southern U.S. this week, with temperatures expected to be up to 35° above average. In Texas, temperatures reached triple digits, something historically uncommon for the month of May. CBS News medical contributor Dr. Céline Gounder explains the health concerns, especially for pregnant women.