!TIL that when washing clothes with modern detergent (!), cold water is just as effective as warm water, while using 75% less energy - https://io9.gizmodo.com/why-are-you-still-washing-your-clothes-in-warm-water-1706931003

But it's recommended to use warm water (>42°C) to kill bacteria from bed clothes and underwear!

#science #lifeprotip