I'll argue that, if it got down to the sharp edge of survival's knife, only the 2-degree warmer twin would come home. 2 degrees C (3 F) is palpably warmer. Tha

I'll argue that, if it got down to the sharp edge of survival's knife, only the 2-degree warmer twin would come home. 2 degrees C (3 F) is palpably warmer. That being said, if a 2-degree dip in temp would kill you, you are already praying for Ernest Shackleton's leadership.