One of the oldest and best tools used by men across the centuries has always been the wool. Best known as an effective defence against the cold, what just few are aware of is that wool is a great shield against the heat as well. Who perfectly knows that are the Tuareg, the nomad populations that inhabited for centuries the desertic lands in Northern Africa. Their wool clothes are traditionally worn under the fierce sunlight of the desert, protecting them by thermal shocks and extreme temperature ranges.
But what astonishes most is the fact that nowadays the wool is yet the best sustainable insulating material.