A closer look

Imagine packing for the ultimate Antarctic camping trip and deciding that 4,500 calories a day is plenty for hauling 200-pound sleds in -40 degree weather. Cherry-Garrard and the Terra Nova crew were literally starving to death with full stomachs. Their daily pemmican and biscuit rations lacked the essential fats and calories needed for polar survival, meaning the harder they worked, the faster their bodies cannibalized their own muscles.