Cows worldwide in different climates with different temperatures have to deal with heat stress. Especially the combination of high temperature with high humidity are causing a lot of stress for cows. Heat stress decreases feed intake, milk production, conception rate and has a very negative impact on the immune system. Research concludes that the total cost of heat stress is $150 billion per year. Because of this big impact Nuscience pays a lot of attention to support cows during periods of heat stress with an extensive buffering program effectively reducing the negative effects of heat stress.