 Neonatal hypothermia is associated with increased risk of mortality as well as multiple morbidities. The prior HEAT study conducted at our institution showed a difference in neonatal hypothermia with a change in ambient operating room temperature. The investigators objective is to determine if an increase in ambient operative room temperature decreases the rate of neonatal morbidity. Operating room temperature will be randomized to the current institutional standard of 20C 67F or a temperature of 24C 75F, on a weekly basis for a period of 1.2 years. 