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Have you ever wondered everyone's nose is a different ? Researchers have come up with a explanation for this. A study from Pennsylvania State University in the USA says the Earth's climate could have to do with the shape of our nose. The study found that people who have noses usually live in warmer, more humid . People with narrower noses are more found in colder and drier climates. The nose plays an important in making sure the air we breathe reaches our in a warm and moist condition. The width of the nostrils and length of the nose help to make sure this happens. Researchers said the nose is a little like a temperature .

The researchers used 3D images to measure the noses of more than 2,600 people from Africa, Asia and Europe. They measured the of the nostrils, the between nostrils and nose height. The researchers said their findings could help people who move to different climates to adjust to the or cold, and the humidity. This could help reduce respiratory . Study co- Dr Arslan Zaidi said increased travel and climate change make it to predict if our nose will change shape in the . He said: "Our lifestyles aren't what they used to be. We move around the world way too . That makes it very complicated to predict the future [] of the nose with the climate."

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